Osana Najimi

Student Info
Role Rival;
Senpai's Childhood Friend
Class 2-1
Club No Club
Persona Lovestruck
Tsundere (10/16/2016-10/18/2017)
Crush Senpai
Strength Very Weak
Appears Week 1
Games Kuudere Simulator 3
Voice Brittany Lauda[1]


Osana Najimi is the first introduced rival[3] and a female student at Akademi High. She will be used as a tutorial at the beginning of the full game.[4]

Along with the official demo of Yandere Simulator, Osana was released in the August 31st, 2020 Build.



Osana's original look was Raibaru Fumetsu's current appearance.

Osana had light orange eyes and golden hair tied up in two short pigtails. Her hair was tied up by two pink scrunchies with white polka dots and adorned a light purple bow on the right side of her head. She wore white leg warmers similar to the ones the bullies wear.

Osana's original look.


Osana's current appearance has orange eyes and hair, which is tied into twin-tails with two salmon-pink scrunchies with white polka dots, that reach her knees. She also wears a small red bow on the right side of her head. The ends of her hair fade into a blonde ombré. She wears stockings that match her scrunchies and her shoes are black. She has a bust size of 1.

As of the March 15th, 2018 Build, her hair and eyes are much lighter and her hair gradient starts further up. This appearance was mistakenly made available to players.[5] As of the March 31st, 2018 Build, she has retained her lighter hair and eyes but slightly less saturated. YandereDev stated that this happened because he wanted to test out features.

Osana's current look.


"Osana and Senpai have been close friends ever since they were very young children. They have always lived next door to each other, and have always walked to school together.

Despite their closeness, Osana is quite rude and harsh towards Senpai; she is always easily irritated and quick to anger when he is around. The reason for this behavior is because Osana has developed romantic feelings for Senpai, but is afraid of letting him know how she truly feels about him.

She doesn't want him to know how she truly feels about him, so she is mean to him at almost every opportunity. However, her true desire is to confess her feelings to him underneath the cherry tree behind the school...and if nothing stops her, that day will come very soon."[6]



In the original introduction of the game, after Ayano Aishi bumps into Senpai, she can be seen talking to him, acting like a stereotypical tsundere. The first introduction can be seen on YandereDev's YouTube channel, though the introduction is now outdated.

In the second introduction, added in the August 15th, 2015 Build, Osana is mentioned by Info-chan, as she requests for Ayano to murder Osana. Info-chan expresses that she wants Ayano to "make her suffer". It is currently unknown what grudge Info-chan holds against Osana.

The updated version of the second intro, added in the June 15th, 2019 build, is slightly different from the original second intro, but now features graphics. In this cutscene, Osana and Senpai are seen talking near one of the bathrooms. The Osana and Senpai talking animation loops, the surroundings are blacked out, and the animation is seen through the hollow in Ayano's silhouette.  Ayano then expresses that she wants to kill or hurt Osana. During the Info-chan texting sequence, the dialogue was not changed and, according to the paragraph above this: "Info-chan expresses that she wants Ayano to 'make her suffer'. It is currently unknown what grudge Info-chan holds against Osana."


Among the personas currently implemented into the game, Osana is Lovestruck. Like the other rivals, if she witnesses a murder, she will run to Senpai and tell him about it which causes an automatic Game Over. Like Raibaru, Osana has no reaction to the camera but will instead become annoyed with Ayano and cause a reputation penalty of 1 point if she aims her camera at her. If Raibaru is gone, Osana will refuse to follow Ayano if she has a regular or low reputation, saying that she doesn't know her well enough. If Raibaru is present, Osana will also refuse to follow Ayano because she is hanging out with her friend. If Raibaru is missing or dead, Osana's animations will change and she will mourn her in the plaza before and after class.

Osana Najimi is a tsundere, meaning she is hostile and cold towards the person she likes (Senpai) before warming up and becoming sweeter to a person eventually. She is nice to everyone else apart from Senpai and her stalker, as she is polite and visibly grateful to Ayano when she completes Osana's task. Despite Osana's usual treatment of Senpai, there are times where she is genuinely nice to him, such as during her Tuesday, Wednesday and Friday events. Regardless of her attitude and Senpai's ignorance, Osana is still very considerate.

It is implied but not confirmed that Osana is a very popular student, as she is close friends with Raibaru, and is seen sunbathing with several other girls. She also states during her confession that many boys ask her out, though it is unknown if that is actually true.

Osana is also very loyal. This is shown if the player ruins Raibaru's reputation, where Osana is hesitant to leave Raibaru just because of the rumors and says that she will return to Raibaru's side in a heartbeat.


Osana's reputation graph.

Osana's default reputation is +67.

Liked: 100

Respected: 100

Feared: 0


Osana is an only child.[7] YandereDev doesn't imagine her mother to be tsundere.[8]

Osana and Senpai attended the same middle school.[9] They have probably known each other for over a decade.[10]



Osana and Raibaru's conversation at the Plaza by the tree.

At 7:07 AM, Osana enters the school grounds. She walks to her locker at 7:09 AM and changes from her outdoor shoes to her indoor shoes. At 7:20 AM, she goes into the Plaza and talks with Raibaru.

At 8:00 AM, Osana walks into Classroom 2-1 and sits at her desk. She starts her morning classes at 8:30 AM, and leaves the classroom at 1:00 PM before going to the Rooftop to eat her lunch with Senpai.

Osana walks back to class again at 1:30 PM and participates in cleaning time between 3:43 PM and 4:00 PM. During cleaning time, Osana cleans the Fountain in the Plaza with Taro and Raibaru nearby.

Osana cleaning the fountain.

At 5:16 PM, she heads to her locker and changes from her indoor shoes to her outdoor shoes and walks home with Raibaru and Taro.

If Raibaru has died, she will go to the tree in the plaza where she usually hung out with Raibaru and mourn. She will still eat lunch with Senpai during lunch and will still clean the fountain during cleaning time. After school, Osana goes back to the tree to mourn. Osana will use the bullied walk, even if her reputation is still high.

Osana mourning Raibaru. September 14th, 2020



At 7:00 AM, Osana will talk to Senpai and argue about his waking habit. Afterwards, Osana will ask Senpai to go to the rooftop at lunchtime. He accepts.

At 7:03 AM, Osana and Raibaru talk about how harshly Osana talks towards Senpai. At 7:09 AM, she will go to her classroom. Osana will complain and worry that Senpai will not like her bento. Raibaru encourages her and tells her that he will love it.

At 7:17 AM, Raibaru will ask Osana about the boy she likes. Osana will say he (Senpai) is not her type, but she developed feelings for him over time. Raibaru then asks what her type is and what else she likes in a guy, besides tans. Osana will say that she likes a guy who has a ponytail, glasses, piercings, intelligence, and that the guy has to be a cat person.

At 7:30 AM, Osana will have a phone call with her stalker, after which Raibaru will ask her if everything is okay. Osana will say no and that she needs to think. She will talk about it with Raibaru when classes are done. Raibaru asks if Osana could take a stroll around the school with her, to which Osana agrees. At 7:37 AM, Osana and Raibaru will go to each club room. Raibaru will ask Osana's opinion on each club, which Osana will answer. If Raibaru was not present during the phone call, Osana will go back to the tree in the plaza.

At 1:00 PM, Osana will give Senpai a bento; Senpai will either love it or dislike it depending the player's actions. At 3:30 PM, if Raibaru witnessed the phone call, Osana and Raibaru will talk about the phone call earlier. If she didn't, the private conversation will not happen.


Osana reading the book at the fountain.

At 7:00 AM, Osana will ask to Senpai if she could borrow the book that given to him by his sister. Senpai gives her the book and Osana promises to take good care of it. At 7:03 AM, Osana and Raibaru will talk about the book that she borrowed from Senpai. At 1:02 PM, Osana reads the book at the plaza. After a short period of time, Osana will stand up to strech while moving around the fountain. The player have a chance to shove the book into the water. After streching, she will either continue reading the book or find the book in the water.

At 5:29 PM, Senpai will ask Osana what she though about the book. She tells him that it was way more interesting than she though and returns the book to Senpai. If the player sabotages the book, Senpai will be disappointed at Osana for ruining the book.


At 7:00 AM, Osana asks Senpai why he spends all his time in the plaza. She then challenges Senpai that she will find new spot for him. At 7:03 AM, Osana and Raibaru will talk about the conversation with Senpai.

At 1:04 PM, Osana will take a photo at the east fountain. At 5:21 PM, Osana will show the photo to Senpai, he will either appreciate Osana's photo or be disgusted by content on her phone, depending if the player sabotages her phone.


Before 7:00 AM, Osana and Senpai talk about their nightmares. At 7:00 AM, Osana ask\s Senpai if he could go to the movies with her. He agrees, since he does not have plans. They agree to meet up at the school entrance at 5:30 PM.

At 7:03 AM, Osana and Raibaru will talk about Osana's date with Senpai. At 7:11 AM, Osana tells Raibaru that she is hungry and thirsty. Raibaru tells her that she can get a drink from the vending machine, so she does. If the player breaks the vending machine, Osana will get mad and kick the machine. Otherwise, Osana will get her drink and go back to the plaza.

At 1:03 PM, Osana and Raibaru sunbathe by the pool with the bullies. At 4:11 PM, Osana will take a nap on the rooftop, so she doesn't fall asleep during the movie. At 5:30 PM, either Osana's alarm wakes her up to go meet to Senpai waiting at the entrance, or she will sleep in and miss the movie if the player turned off her alarm.


At 7:00 AM, Osana and Senpai will talk about music, telling each other which music they like. Senpai says he likes Classical while Osana likes J-pop and J-rock, and that he doesn't like her type of music. Osana decides that she will find new music for Senpai and have him listen to it later during lunchtime. At 7:03 AM, Osana and Raibaru will talk about the conversation with Senpai. After talking about it, Raibaru warns Osana that Musume Ronshaku wants to talk with her. At 7:15 AM, Osana and Musume will talk about Osana's possible boyfriend.

At 7:25 AM, Osana will go to the Computer Lab to make a music playlist for Senpai. At 1:00 PM, Senpai will listen to Osana's playlist and will either like it or get disgusted by the audio recording of Osana and Musume converstation which can be replaced by the player.

At 5:00 PM, Osana will go to Senpai's locker. If the player matchmakes her, she will instead head to Kyuji's locker. Osana will then run to the Confession Tree and wait for Senpai or Kyuji. She will then confess her love to him. If she confesses to Senpai, he will either accept her feeling or reject it. If she confesses to Kyuji, he will accept her feelings.


The topics towards Osana are (Negative/Positive/Neutral) as follows:


  • Drama
  • Occult
  • Science
  • Video Games
  • Violence


  • Cooking
  • Music
  • Sports
  • Gardening
  • Cats


  • Everything else



Main Article: Senpai

Osana and Senpai are close childhood friends and regularly spend time together, meeting together in the morning every day. She, Senpai, and Hanako all played together when they were younger.[11]

Osana has a crush on Senpai, but he is oblivious; as a result, she tries to impress him in the days leading up to her confession.

If Osana entered a relationship with Senpai, she would give him "tough love". She would lecture him about leading a carefree life and would encourage him to pursue a career that involves one of his interests. This would eventually lead him to become an author or a horticulturist.[12]

If all the rivals were in school in the same week, Osana would probably end up with Senpai.[13]

Raibaru Fumetsu

Main Article: Raibaru Fumetsu

Raibaru and Osana are best friends. They spend most time with each other and never separate from one another. They are very close, even though they only met one year ago. Raibaru follows Osana everywhere and will instantly apprehend Ayano if the latter tries to murder Osana. As such, she serves as a great obstacle for Ayano.[14]

Hanako Yamada

Main Article: Hanako Yamada

Osana, Senpai, and Hanako played together as children.[11] Osana might be the only person that Hanako would be willing to "give" Senpai to since she wouldn't see Osana as competition, threat, or an enemy.

Hanako would be very sad if Osana died.[15]


Main Article: Info-chan

The second intro did not state why Info-chan is going against Osana. Info-chan simply wanted her to suffer, suggesting a negative relationship between the two.

Kyuji Konagawa

Main Article: Kyuji Konagawa

Osana's secondary crush is Kyuji and as of the demo, Ayano can matchmake Osana with him.

Osana's Stalker

Main article: Osana's Stalker

Osana's stalker thinks that Osana is be similar to Miyuki, and he will always love her. He kidnaps Osana's cat until she loves him, or he will kill the cat.

Osana's Cat

Osana deeply cares about her cat. Ayano can save Osana's Cat from the stalker to either befriend or betray Osana.


  • Attempting to dismember Osana will cause an infinite amount of her head, torso, and arms to pop out, and eventually will crash the game.


  • Osana's design was inspired by anime characters such as Asuka Langley Sohryu from Neon Genesis Evangelion and Rin Tohsaka from Fate/stay night. Her twin-tails and stockings, in particular, were inspired by Michiru Matsushima from The Fruit of Grisaia.
  • She is the second tsundere character to be introduced by YandereDev, the first being Tsundere-chan from Kuudere Simulator. YandereDev has said that Osana Najimi is "Tsundere-chan with an actual design that had effort put into it." [16]
  • Her voice actress, Brittany Lauda, voices Audrey Belrose, another tsundere, in the popular adult, dating simulation video game HuniePop.
    • Brittany Lauda was once asked to record more lines for a Senpai-Rival interaction event.[17]
  • At one point, YandereDev considered splitting Osana into two characters - a gentle childhood friend with Rival-chan's appearance, and a tsundere childhood friend. They wouldn't have been sisters, however, as that would mean eliminating one might affect the other so strongly that she couldn't consider dating.[18]
  • Her first name Osana (幼) means "Child", while her last name Najimi (なじみ) means "Friend" in English. Her first and last name osananajimi (幼なじみ) together mean "Childhood Friend" in English. The word Osananajimi is also a Japanese term for common trope in the romance genre, which is characterized by the fact that one or both childhood friends fall in love with the other. Another term for this common trope is Childhood Friend Romance.
    • There's also a Japanese name "Osana" (緒沙那), which consist of kanji 緒 (o) meaning "thread", 沙 (sa) meaning "sand" and 那 (na) meaning "what".[19]
  • Osana's character type is a trope known as Patient Childhood Love Interest.
  • YandereDev said on Twitter that Osana's birthday will be in January, most likely the 1st.[20]
  • Her "trademark" color is "probably" orange, but her favorite color is salmon or persimmon pink, like her scrunchies and stockings.[21]
  • In the final game, Osana may tease Senpai about how he stands under the cherry blossoms all day, a reference to how long Rival-chan was under the cherry tree.[22]
  • Osana performs the same "hip sway" animation as "Sansdere-chan" from Bad Time Mode.
    • The animation can be found with the name "f02_tsunIdle_00".
  • YandereDev said that the fastest possible way to put Osana into the game would be to take all of the code that applies to Kokona and point it at Osana.[23]
    • As of the demo, most of her code is unique and is different from Kokona.
  • Osana does not have a camera reaction when Ayano aims a camera at her, instead just causing a reputation penalty.
  • Osana will refuse to follow Ayano if she joins the delinquents, but can still be ordered to go away or to go distract another student via intimidation.
  • In the October 16th, 2016 update, it was possible to add Osana to the game by changing ID 33's name from "Unknown" to random words in the JSON file.
    • As of the January 3rd, 2017 Build, it was no longer possible to add Osana by editing the ID 33's in JSON files. Attempting to do so would trigger an Easter egg involving Fun Girl.
    • As of the August 18, 2018 build, her student ID has been changed to 11.
  • Originally, if Raibaru died or went missing, Osana would patrol the school the next day.
    • However, as of August 31st, 2020 Build/Official demo, she will mourn about her best friend's death instead.
  • Before her implementation, Osana's Student Profile had her named as "Reserved".
  • Osana's relationship with her parents is fine.[citation needed]
  • At one point in time, YandereDev had decided on a name for her cat but has now forgotten it.[citation needed]
  • She's 158.5 cm tall (about 5'2).[24]
  • If the befriend elimination method is used on her, she will no longer interact with Senpai anymore.
  • Osana's embarrasing secret is that she writes fanfictions where she romances boys from her favorite anime. According to Hoshiko Mizudori, her username was "The Ginger Ninja" on fansmut.jp
  • She is the only rival who is classmates with Ayano. The others are either faculty members, like in the case of Mida and Muja, or in different classes.
  • She appears differently on the title screen depending on how the player eliminates her. For example, befriending Osana makes her appear on the title screen holding her cat.


N-no! W-why are you asking ME?! I-it's not like I like him or anything! I don't even NEED a Senpai! I wouldn't date YOUR Senpai! D-don't ask me any more questions! Baka!
— Osana talking to Ayano in "I Want My Senpai Back".
— Osana in "Raising the Strength Stat".
Did you oversleep again!? UGH! You ALWAYS keep me waiting! D-don't get the wrong idea! It's not like...I LIKE you, or anything! ...d...dummy...
— Osana in "Yandere Simulator Rival Introduction Video". [25]
Geez, stop pushing yourself. You're going to get yourself hurt one day, you idiot. / D-don't get the wrong idea! It's not like...I LIKE you, or anything! ...d...dummy...
— Alternate Osana line for the "Rival Introduction Video".
Hello...? / UGH! I told you to stop calling me, you creep! / How many times do I have to say it? I'm! Not! Interested! / If you don't stop bothering me, I'm gonna call the cops and- / ...wait...what...? Are you...serious...?! / Okay. Okay, fine! I won't call the police. / Look, this is a bad time for me. We'll talk about this later. Just...don't do anything rash, okay? / ...ugh...why did something like this have to happen...
— Osana talking on the phone with her stalker.
Ugh! You can be such a pain, Senpai!
I can't believe you overslept again! It's just like back in middle school!
I'm not your personal alarm clock, you know! You can't rely on me to wake you up every day!
...n...no...that...that's not what I...
...just forget it, okay?!
ANYway, I want you to meet me on the school rooftop at lunchtime. Got it?
Stop being so difficult! Just be there, alright? And don't keep me waiting!
— Osana and Senpai Monday morning conversation.
Now that you mention it, yeah - there is something I need help with. I lost my phone charm - it's in the shape of a cat. I know that I lost it somewhere in the hedge maze - but I don't wanna go back in there. It's scary! I'm worried I'll get lost and be stuck in there for hours... I feel bad for asking, but... would you be willing to go into the hedge maze and get my phone charm for me?
— Osana asking Ayano to find her phone charm.
Really? You'll do it? You're a lot more brave than I am! Good luck!
— Accepting Osana's task.
Yeah, I don't blame you... I don't want to go anywhere near the hedge maze ever again...
— Denying Osana's task.
Oh my gosh! You actually found it! Wow - that's amazing! Thank you so much!
— Completing Osana's task.
Is this a bad idea? Maybe I shouldn't do this... what if he doesn't like it...?
I hope so...I just...I just wanna make him happy...
— Osana pondering about giving Taro Yamada a bento.
It's a bento, stupid!
D...don't get the wrong idea! I didn't make it for YOU! I just... made too much food this morning. So, you can have the extras!
Just...shut up and eat it!
— Osana giving Senpai a bento
...r...really...? ...y...you like it, Senpai...?...
...That's right! You SHOULD be grateful! But don't expect me to keep giving you free food!...u...unless you
want to eat my cooking every day...
I...I didn't say anything! D...dummy!
— Osana reacting to Senpai liking her meal.
Huh? What do you mean?
Hey! You shouldn't insult a girl's cooking, you dummy!
Huh?! Senpai, wait!...oh, no... what did I do wrong...?...
— Osana reacting to Senpai disliking her meal.
Huh? Baka!
— Osana in "January Osana Progress Report Part 2".
Um, EXCUSE me, we're TRYING to having a private conversation. (sigh)...Nevermind Senpai...We'll finish this later
— Alternate Osana's line if her conversation with Senpai has been interrupted.
Um, excuse me? We're trying to have a private conversation here! (sigh) Never mind, we'll just...talk later.
— If Osana's conversation has been interrupted.
Okay, Osana...it's time...you can do this!
— Osana prepares her bento for Senpai at lunch.
Ugh, you can be such a pain, Senpai!
— Osana in "Kuudere Simulator 3".[26]
Just forget it, okay?! Anyway, I want you to meet me on the school rooftop at lunchtime! Got it?
— Osana in "Kuudere Simulator 3".
Ow! That hurts!
— Osana about to get decapitated by the fan.
So, Senpai, why do you spend so much time in the school plaza?
...I...I think the most soothing place is next to someone you care about...
...n-nothing. But, doesn't it get boring to spend most of your time sitting in one spot?
Oh, yeah? Challenges accepted! I'll prove that I can find a better spot!
Don't underestimate me! I'll show you, Senpai!
— Osana's and Senpai's Wednesday morning conversation.
Hey, Senpai - I want to show you something! Take a look!
What? What is it? What's wrong?
What are you talking about? Let me see.
What the...What IS THIS?! How did this get on my phone?!
Wait! I didn't take these pictures! I swear! You gotta believe me!
— Osana's and Senpai's sabotaged Wednesday after-school conversation.
Hey, Senpai - I want to show you something! Take a look!
...r...really...? ...y...you think so...?
...Well, of course! I told you I'd find the best spot in the school, didn't I?
...m...maybe we can check it out together sometime...
I-I didn't say anything! C'mon, let's get out of here already.
— Osana's and Senpai's original conversation after school on Wednesday.
Hey, Senpai...do you ever have...recurring nightmares?
Sometimes, I have dreams where...somebody ties my hair around something really heavy, and...throws it into the ocean. I get dragged into the water and...drown...
No way! It took years for my hair to get this long; I wouldn't cut it because of a scary dream...
I made a promise to myself not to cut it until...a certain idiot stops being stupid and realizes how I feel...
A-anyway, if our dreams really do have meaning...what does your dream represent?
— Osana and Senpai's conversation before entering the school on Thursday.
Hey, Senpai - a guy like you doesn't have any plans tonight, right?
Good! Then you're going to see a movie with me.
I...Idiot! It's not a date! I was gonna go with my friend, but she had to cancel. You're only coming with me so that her ticket doesn't go to waste. Got it?
Good! It's settled, then. Meet me here at 5:30 so we can leave in time to see the film!
...ooh...a date with Senpai...!
— Osana and Senpai conversation at the morning on Thursday.
He! Said! YES! It's actually happening! I'm going...on a date...with Senpai!!
The last three times I went to a theater to watch a movie...I fell asleep and woke up during the credits. hat if it happens again...during my date?! I'd die of embarassment!!
Ah - that's a brilliant idea! The school rooftop is really peaceful after cleaning time - I'll take a nap there!
By the way - you still interested in sunbathing at the pool during lunchtime?
— Osana and Raibaru conversation at the morning on Thursday.
I woke up late, so I had to skip breakfast this morning...I'm starving!
Oh, I would LOVE a bag of chips right now...but that machine is was overpriced. I don't have enough money with me.
Plus, I think some of the machines around here are just plain broken! Sometimes I put coins, and nothing comes out! I swear, I'm gonna kick the next machine that steals my money...
Ahh, don't worry about it...I'll be fine...
— Osana complaining to Raibaru about her being hungry.
I don't want to fall asleep during the film...I'll just take a quick nap...Just gotta set my alarm, and...done!
— Osana setting her alarm before taking a nap and going to the theater with Senpai.
*Yawn* ...oh! Gotta meet Senpai!
— Osana waking up if the player didn't turn off the alarm on Osana's phone.
I'm glad you didn't keep me waiting...for once in your life! Come on, let's get going!
— Osana starting to leave school and going to the theater with Senpai.
Senpai, what kind of music do you like?
So, a bunch of old dead guys? You've got some pretty strange tastes, Senpai...
J-pop and J-rock, obviously!
You just haven't found the right bands yet! I'll put together a playlist for you to listen to at lunchtime.
I'll be waiting on the rooftop! Don't be late!
— Osana's and Senpai's conversation on Friday morning.
I already knew what kind of music he listens to...but I asked him anyway, to guide the conversation where I wanted it to go. The important thing is, it worked!
Thanks for the heads-up! I won't hide from her. I'll just talk with her, and...get it out of the way! Whatever she wants, it can't be THAT bad.
I'm sure it'll be fine! I just hope it's over quickly...so I can hurry to the computer lab and put together a mix tape for Senpai!
— Osana's and Raibaru's conversation on Friday, and if Musume Ronshaku is present at school.

Alternate Osana's line of Osana talking to Raibaru, even if Musume Ronshaku is present at school.

Phew...I feel like I actually made it through a conversation without embarassing myself for once...
Long stroy short, I'm making a mix tape for Senpai! I'm gonna head to the computer lab and put it together right away!
— Alternate Osana and Raibaru's conversation at the morning on Friday if Musume is not in school.
What? HIM? Ugh, No way! That guy's a total creep! I wouldn't date him if he was the last man alive on earth! He can go jump off a cliff for all I care!
O-oh...h...him...?...he's just my...childhood friend...it's not like I...like him, or anything...
— Osana and Musume's conversation on Friday.
Seriously? Beethoven? Time to drag you into this century, Senpai...
— Osana at the computer lab on Friday.
Okay, Senpai! Time for you to hear what REAL music sounds like!
— Osana and Senpai conversation at the lunchtime on Friday.
Told you so, Senpai!
There's plenty more where that came from!
— Osana reaction of Senpai love hearing J-pop and J-rock on Osana's phone.
Huh? Wait, Where are you going?
geez...does he hate pop music THAT much?
— Osana realize that Senpai dislike J-pop and J-rock on Osana's phone if Ayano put a doctored voice recording on Osana's phone.
...you...you kept me waiting...you dummy...listen up, okay? Because...I have something...really important to say...
...you know...a lot of boys ask me to go out with them...but...I always turn them down...it's not like I'm not like interested in boys...I just didn't feel like dating anyone...except for one person
...someone who's always been there, right next to me...up until now, I always thought of you as just a childhood friend...no...I was just trying to tell myself that, because I was afraid to admit my feelings...but...I finally realized...I can't keep lying to myself, and lying to you...I have to be honest with my feelings...this is...so embarrassing, but...I can't stand just being friends anymore! Listen up, okay?! Because...it takes a lot of courage to say this! I...I love you, you idiot! Iloveyoumorethananythingelseintheworld!
...I...I don't get it...I should be so happy...but I can't stop crying... You're...being honest, right?
I'm...I'm so happy... Please...never leave me...you big dummy...
— Osana confessing to Senpai and getting accepted.[27]
...wh...what...?...is this...because of the way I've treated you...?
I...I can...I can change... I, I can, I can stop...I, I can...
— Osana confessing to Senpai and getting rejected.[27]
A flower? For me? Really? ...idiot! What a stupid gift! What do you expect me to do with this?! I'll put it in my hair for the rest of the day - but ONLY because I don't have anywhere else to put it! It's not like I WANTED a flower from you or anything! Baka!
— Hypothetical dialogue of Osana reacting to someone giving her a flower.[28]
Ahh, the sun feels so good today!
— Osana starting to sunbathe on Thursday
Huh? Ah - ah - ahh! AHH! AHHHH!
— Osana before being drowned.
...a little nap won't hurt... *yawn*...*snore*...
— Osana napping while sunbathing.
Ahh...I must've dozed off...
Okay, ahh! That's enough for today!
— Osana finishing sunbathing on Thursday.
It's tempting...I'm hungry...but it doesn't feel right. Maybe later?
— Osana refusng to accept a salty snack from the vending machine from Ayano.
Whoa, that was close! Thanks for the heads-up, Raibaru!
— After Osana dodges buckets of gasoline.
Senpai...do you remember what we were talking about this morning?
It...didn't work out...so, just forget about it, okay?
— Osana talking to Senpai after her phone is never returned on Wednesday at around 5 P.M.
I...well...yeah...I do have a problem, but...I'm not sure if you'd be able to help me... / A few days ago, in Shisuta Town, this weird guy approached me and started flirting with me... / He was really creepy and gross, and I wasn't interested in him at all...it took forever to make him leave me alone... / The next day, I started getting text messages from him...even though I never gave him my phone number! / The worst part is, he keeps texting me pictures he's taken of me...it's like he's just following me around snapping photos all day! / No! I can't do that! He told me that if I got to the police, he'll...he'll... / I...I don't wanna tell you, but...calling the police is not an option! / No, it's nothing like that... / What...? No! I don't want you to get involved! Look, I appreciate your concern, but...please...just...let me deal with this myself.
— Osana during her conversation with Raibaru on the rooftop.
Raibaru?! What's wrong?! Are you hurt?!
— Sees Raibaru's corpse.
Raibaru!! Oh my god! RAIBARU! Answer me! Wake up...please...wake up...don't do this! Oh god...! This can't be happening! No! NO!!!
— Running up to Raibaru's corpse.
...he...hello...police...? I'm...a...student at Akademi.....my friend is...dead...I'm...I'm not sure what happened.....please....send someone....anyone...
— Calling the police about Raibaru's death.
Don't. I know what this is about. It's those stupid rumors, right? I don't care what people are saying. You're my friend. I'm not going to abandon you.
I already told you: I don't care! I won't desert a friend just because of some petty drama!
Raibaru, I...(sigh)...I can't talk you out of this, can I? ...well...if you change your mind, let me know. I'll be at your side in a heartbeat.
— Lose a friendship with Raibaru.
I'm sorry, I wouldn't be comfortable with that. I just...don't know you well enough. Maybe if there were more people at our school who were willing to vouch for you...
— Attempting to have Osana follow Ayano if Ayano's reputation is average or low, and Raibaru is gone or teaching martial arts club.
I'm sorry, I can't do that right now. I'm hanging out with my friend.
— Attempting to have Osana follow Ayano if Raibaru is talking with her.
...oh! This place is perfect! Senpai would love it here!
— Osana about to take a photo of east fountain on Wednesday at lunchtime.
What's that book you're always reading, Senpai?
What's it called? What's it about?
...r...really...? You...you'd let me...
...I...I mean, of COURSE I'd take good care of it! That's obvious!
Yeah, I will!
— Osana and Senpai's conversation on Tuesday.
It actually went...surprisingly well! He let me borrow something - a book. It was a gift from his sister.
Nah - I'll wait until lunchtime. I'll read it at the fountain...in the same spot where he spends most of his time. It'll make me feel...closer to him.
Right - I'll take good care of it!
— Osana and Raibaru conversation on Tuesday.
It was actually...way more interesting than I expected. Thanks for letting me borrow it!
...y...you should spend more time with me...instead of reading old books...
I -I said, "There are better novels than this old book!" Anyway, let's get going already!
— Osana And Senpai Conversation on Tuesday After School if Senpai's book is not damaged.
Huh? You're the one who wanted to meet me?
Your note said that you wanted to talk about...blackmail?
No - you've got the wrong idea. I mean...yeah, someone is stalking me, but...he's not blackmailing me!
He's...he's got a...he's got a hostage...he's threatening to harm them if I go to the cops...
Ugh...I know you're not going to able to take me seriously after you hear this...
It's my cat...my pet cat. He kidnapped her, and he says he's going to kill her if I call the police...
He says that if I want my cat back, I have to go to his house...but I know that if I step foot inside his home, he won't let me leave...
Well, yes, but -
Why? What are you planning to do?
W-what?! Don't try it! He's a dangerous person!
You don't know what you're getting yourself into!
Oh, fine...I just want this horrible experience to end, one way or another. I'll text you his address...
But, don't blame me if you get hurt...and don't let anything happen to my cat!
— Osana and Ayano's conversation.
Oh my god - That's my cat!
I can't believe it...you really rescued her!
Now I can finally report that scumbag to the police!
I will! And one last time...thank you!
— Osana surprised that her cat is rescued by Ayano.
You have a nice place, Yan-Chan!
Where are your parents?
So, you take care of yourself?
That must be hard...
I want to thank you again for rescuing my cat...
...and saving me from that stalker!
That was a horrible experience...
...I'm so glad it's all over!
I can't imagine what it's like to become obsessed with someone after meeting them for the first time...
It doesn't make any sense!
I'm shocked that there are people in this world who would be willing to harm a cat just to get what they want!
That's insane! He said he loved me, but...
I don't think it was love.
It was just a sick, twisted obsession that he BELIEVED was love.
It makes me feel sick!
But, starting tomorrow...
I won't have to worry about it anymore.
It's all thanks to you!
Thank you!
Oh - I just realized I've been rambling this entire time.
You said you had something important to tell me, right?
— Ayano's and Osana's conversation at Ayano's house before school.
H...huh?! I don't have a crush on him!
H-he's just my childhood friend, that's all!
I-I don't have feelings for him at all!
Confess your...love?
Are you saying that...you have feelings for him?
You got me...
...it's true...
...I do have feelings for him...
...after everything you've done for me...
...I could never take someone away from you...
Okay...I'll do as you've asked...I'll stay away from him...
But...you'd better take really good care of him, okay?!
— Osana during the final phase of the Befriending elimination method.
Huh? I...I...don't...I don't have a crush...on...
...something's...wrong...I feel so...s-sleepy...
Wh-why are you...smiling...huh...
— After being served drugged tea as part of the Betrayal Method.
...huh? ...what is this? ...why am I tied to a...chair?! Why are you doing this?! This isn't funny! Lemme go! Lemme go right now!
— After Ayano betrays Osana.
Ugh, seriously?! Who did this?! This isn't funny!
— Osana after getting splashed by water from the bucket.
Now I have to change my clothes, what a waste of time!
— Osana about to go to the shower room after being dumped with water.




  1. https://twitter.com/YandereDev/status/649872815600959489
  2. https://twitter.com/YandereDev/status/645124883924447232
  3. https://twitter.com/YandereDev/status/661279626191200256
  4. https://twitter.com/YandereDev/status/614347904770138112
  5. https://www.reddit.com/r/yandere_simulator/comments/84mu22/why_is_osanas_hair_changed_the_portrait_too/
  6. http://yanderesimulator.com/characters/
  7. https://www.reddit.com/r/yandere_simulator/comments/66rll0/question_about_osanas_family/dgkqeq3/
  8. https://www.reddit.com/r/yanderesimulator/comments/9arbwu/some_questions_about_characters_mothers/?utm_content=title&utm_medium=user&utm_source=reddit
  9. https://www.reddit.com/r/yandere_simulator/comments/7ss427/rivals_middle_schools/
  10. ↑ 22.0 22.1 https://twitter.com/YandereDev/status/634821896186400768
  11. 11.0 11.1 https://twitter.com/YandereDev/status/693340076026167300
  12. https://www.reddit.com/r/yandere_simulator/comments/5p25e5/what_would_senpais_life_look_like_if_he_ended_up/
  13. https://www.reddit.com/r/yandere_simulator/comments/7v2pd9/question_about_senpai/
  14. https://www.youtube.com/watch?v=fujuPvXBUVI
  15. https://www.reddit.com/r/yandere_simulator/comments/576nxy/will_senpais_sister_be_upset_if_osana_dies_since/
  16. https://twitter.com/YandereDev/status/664324748227186689
  17. https://twitter.com/YandereDev/status/697239706107445249
  18. https://twitter.com/YandereDev/status/649713774367084544
  19. https://www.behindthename.com/name/osana/submitted
  20. https://twitter.com/YandereDev/status/645124883924447232
  21. https://www.reddit.com/r/yandere_simulator/comments/7t7ofs/questions_about_osana_najimiinfochanjournalist/
  22. https://twitter.com/YandereDev/status/660601445696188417
  23. https://www.reddit.com/r/yandere_simulator/comments/50nfnp/whats_happening_to_kokona/
  24. https://www.reddit.com/r/yandere_simulator/comments/f6g4jq/osanas_hair/
  25. https://www.youtube.com/watch?v=Aa7ovZGvY6o
  26. https://www.youtube.com/watch?v=AmERFMTSNKc
  27. 27.0 27.1 https://www.youtube.com/watch?v=-LDncgTOI9Q&t=1537s
  28. https://www.reddit.com/r/yandere_simulator/comments/7syy98/rivals_question/
  29. https://yanderedev.wordpress.com/2016/10/14/update-coming-soon-4
  30. https://yanderedev.wordpress.com/2016/10/15/update-still-coming-soon-but-slightly-less-soon-than-expected
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