Hanako Yamada

'''The Imouto is Senpai's little sister and will be either the 8th or 9th rival of Yandere Simulator. She has not been fully implemented in the game.'''

She is a student at Akademi High. She is one year younger than Senpai, but is two school years behind him. She will remain female, even if there is a female Senpai.

Appearance
The Imouto will wear the default uniform, unless customized.

She will look like a gender-swapped version of Senpai.

This means that if Senpai is customized, she would have the same skin and hair color as him. However, the Imouto will have a unique hairstyle that no other NPC will have. At one point it was made to look similar to Midori's original hairstyle, but she had more bangs in her face.

The appearance was changed again. If Senpai is kept as default, the sister will have black hair and black eyes. The sister now has two pigtails that reach her shoulders, similar to the first drafts of the Imouto. She has a pink heart hairpin on the top right side of her hair. She has fair skin. She has light grey sneakers.

It is also known that she will eventually wear special stockings to make herself stand out. It is unknown what they look like at the moment.

Personality
Senpai's little sister was originally going to be cute and innocent, but then later changed to lewd, jailbaity and super perverted. Because of these changes, the player would feel less guilty if she was killed.

After that she was changed to extremely clingy, childish, and emotionally dependent on Senpai. She will be a "happy anime girl" She cannot participate in physical fights against murderers.

Routine
His sister will remain in another city until the week when she is introduced. Since she will always be close to Senpai, it is presumed that she will have a similar routine to him. In order to eliminate her, the player will have to find a way to eliminate her during the few moments she is away from Senpai.

If the player fails to eliminate the sister by Friday, she will force Senpai to promise to not get a girlfriend by The Cherry Tree.

Senpai
Along with Osana, she and her brother used to play together when they were little.

She doesn't lust after her brother. She loves her brother to the extent that she does not want him to gain a girlfriend. She wants all his attention. She is also extremely clingy, possessive of him, and would never want to leave his side.

If she is killed, Senpai's sanity variable will greatly decrease.

At the end of the sister's week, she will force her brother to agree that he'll never get a girlfriend.

Osana Najimi
Osana, Senpai, and his sister hung out together when they were young.

Trivia

 * When matchmaking, you will have to make Imouto-chan love a boy even more than she loves her own brother.