Yandere Vision

Yandere Vision is a useful gameplay mechanic in Yandere Simulator that helps the player find useful objects and different people.

When Yandere Vision is activated, everything becomes hazy and time slows down. The protagonist's pupils and highlights disappear when it is activated.

Yandere Vision can be activated by holding Control (PC) or RB (controller).

Tagging
Yandere Vision allows the player to see characters and objects of interest (such as students, teachers, and weapons) through walls. Yandere-chan can see Senpai, rivals, and useful items without having to prepare in advance. To see other NPCs through walls, the player must first "tag" them.

The player can "tag" a person by taking a clear picture of their face and sending it to Info-chan, who will then give Yandere-chan information about that particular person. It consists of their name, club, persona, strength, possible crush, and any additional information. Info-chan will not recognize NPCs without a proper AI, such as the the placeholder nurse. She will not give Senpai's personal information to Yandere-chan, since she does not care about him. Once Yandere-chan knows the tagged person's daily routine, she can mentally picture where they are at that time, which is why the player can see them through walls.

Since 1980s Mode will not feature certain things like Info-chan and phones, it is unknown how the protagonist will be able to tag people, if at all.

Outlines
When Yandere Vision is activated, outlines indicating objects or people will appear. Different things have differently colored outlines. Outlines around people can change color, depending on the circumstances.
 * Useful objects, such as poison, gloves, buckets, weapons that aren't being held, and garbage bags outside of dumpsters, are outlined in cyan. The Counselor also has a cyan outline.
 * People whose photo Yandere-chan has sent to Info-chan are outlined in green under normal circumstances.
 * Some possibly dangerous characters are outlined in red, such as NPCs who have seen Yandere-chan do certain yandere actions or rivals. Pictures are usually not needed for them to change to this color.
 * Senpai is outlined in pink.
 * Students who have witnessed the protagonist acting suspicious, but not dragging a body or being obviously connected to a murder in some way, are outlined in yellow. They'll turn green if the proagonist apologizes to them.
 * Traces of murder (blood, corpses, etc.) are outlined in orange.
 * Yandere-chan is outlined in black. Only two other characters in the entire game will have a black aura. YandereDev has not revealed the identities of the others yet.

Bugs

 * Teacher's Pets who have seen Yandere-chan kill someone will run to a teacher. If there's no body when they come back, but Yandere-chan is still bloody and holding a weapon, the player can make them turn green by apologizing to them, even though they saw Yandere-chan commit murder.
 * As of the November 16th, 2015 Build, untagged students who see Yandere-chan with a katana will react, but not turn yellow. If Yandere-chan sends a picture of them to Info-chan, they will still have no outline. Apologizing will also have no effect on their outline. However, a student who has already been tagged and then notices Yandere-chan with a weapon will turn yellow. After Yandere-chan apologizes, it will become green, as normal.

Trivia

 * Yandere-chan can activate Yandere Vision when running, but not when she is crouching or crawling.
 * In the future, hearts may appear in Yandere-chan's eyes if Senpai is around when Yandere Vision is used.
 * When Yandere Vision is activated in low School Atmosphere, some colors are warped, while other outlines lose their color altogether.
 * If the player has sped up time, activating Yandere Vision will slow it back down. If time is sped up while Yandere Vision is already activated, a minute will pass by in the span of a second, but will slow down immediately afterwards.
 * In the January 1st, 2016 Build, the Student Council President could be seen under the fountain. She was highlighted in red with Yandere Vision. She has been moved elsewhere in subsequent builds.