Yandere-chan stabbing Kenko Suboyaka in the head. October 20th, 2018.

Homicide is a quick, but messy way to eliminate an NPC in Yandere Simulator.



Second sprite art for Homicide from "Yandere Simulator: Past, Present, and Future".


Original sprite art for Homicide. January 3rd, 2016.

In order to murder an NPC, Yandere-chan needs a weapon. With a weapon equipped, she can attack any nearby NPCs. After doing so, Yandere-chan's weapon and uniform will get covered with blood,unless she performs a stealth attack using blunt weapons, and her sanity will decrease by 20%. The more people she murders, the more bloody she will get, and the more sanity she will lose. Once Yandere-chan has killed five people without stopping to restore sanity, her sanity will be at its lowest. Additional kills will not decrease it any further.

She is able to wear gloves in order to keep the weapon clean of her fingerprints so it doesn't get traced back to her. When a student is killed, blood will splatter on the gloves as well.

If she kills a student with the ritual knife found in the Occult Club, she can enter the Dark Void by placing it back in the altar.

Yandere-chan will only be able to kill a teacher with a weapon if she has enough Study Points in Physical Education[1] or if she is in the Martial Arts Club. Trying to attack a teacher without enough Study Points will result in expulsion. Currently, she needs to be at least rank 2 in Physical Education to attack a teacher.


NPCs who have been murdered will not return to school the next day unless Yandere-chan restarts the week or day, with the exception of Senpai, who currently respawns. The teachers and the nurse will be replaced by substitutes, who have random names, random bust sizes, random hairstyles, and random hair colors.[2]


Main Article: Events

Some Students have special events that occur throughout the week (eg. Kokona taking a phone call). If Yandere chan kills a student with a special event, the student won't be able to do the event, which may or may not cause Yandere-chan problems in the future.[3]


Main Article: Clubs

If Yandere-chan kills a club leader or kills enough members of a club so that there are less than five members left, the club will then disband forever. This will cause some students' routines and appearances to change. (The Occult Club, instead of going inside their club room, will converse outside of it; Martial Arts Club members will no longer wear their headbands; etc.)

Sanity Animations

As of the August 15th, 2016 build, sanity-based murder animations have been implemented. As sanity drops, killing animations will take longer.[4]

If Yandere-chan sneaks up behind someone that she is about to kill, she will perform a stealth attack, at the same speed every time regardless of sanity.

When Yandere-chan has high sanity, she will perform a quick and efficient kill. When Yandere-chan has lost a third of her sanity, she will perform a sloppy and noisy kill. When Yandere-chan has lost more than two thirds of her sanity, she will sadistically kill with prolonged attacks, which are brutal and loud.


In the future, when a student is murdered, a memorial will be held for them the next day. The player will lose the morning of that day.[5]



Saki Miyu threatening Yandere-chan. February 17th, 2016.

As of the September 1st, 2015 Build, NPCs will scream loudly right before they are murdered. Other NPCs can hear the scream if they are within its range, which will increase as School Atmosphere drops. Those in the scream's range will turn around and then scream as well. These NPCs become witnesses.

When a student witnesses Yandere-chan murdering another student, they may react in several different ways depending on their persona. So far, only ten personas have been implemented into the game: Loner, Teacher's Pet, Heroic, Coward, Social Butterfly, the Delinquent's Persona, Strict, Phone Addict, Fragile, and Spiteful.

If a witness with the Social Butterfly, Loner, Teacher's Pet, or Heroic persona is left alive, they will damage Yandere-chan's reputation by ten points each day. When Yandere-chan tries to interact with the student for the first time since the murder, they say that they will tell everyone about Yandere-chan's true nature. Afterwards, they will tell the player to go away every time she tries to speak with them.

If a witness with the Spiteful, Fragile, or Coward persona is left alive, they won't damage Yandere-chan's reputation, but won't let Yandere-chan interact with them. However, if she kills someone the Spiteful student likes, they will run away and call the police, damaging her reputation as normal.

In the future, students will not report the player for murder if they hated the victim.[6] It's unknown if this applies to all students. The concept will be greatly simplified in the future to reduce the game's complexity.[7]

After a student witnesses two murders, they will flee immediately.[8] At low School Atmosphere, they might even walk with their phones out, trying to get a picture of the killer.[9] Or, they might take a picture immediately after witnessing murder, which would lead to an instant Game Over.[8]

Club Members

Club member personas are varied. If the player murders a student in front of a club member, they will initially act upon their persona. Afterwards, the club member will tell the club leader what Yandere-chan did, and she will be kicked out of the club forever. She will also be kicked out if the club leader sees her commit murder. If any members see her commit murder, but she isn't a member of the club, she will be banned from joining it.


Main Article: Loner

If a student with the Loner persona witnesses murder or sees a corpse, they will flee the school and call the police, giving the player a total of five minutes to dispose of the corpse, blood, and any other evidence. If the player manages to do so, the police will not be able to uncover any evidence that a murder took place on school grounds, and Yandere-chan will not be arrested.

Afterwards, the student will refuse to talk to Yandere-chan and will damage her reputation by 10 points every day if they are left alive.

Teacher's Pet

Main Article: Teacher's Pet

If a student with the Teacher's Pet persona witnesses a murder or sees a corpse, they will run to their favorite teacher and inform them of what they have seen. The teacher will ask the student to lead her to the corpse. If more than one student with the Teacher's Pet persona witnesses murder, the first witness will inform a teacher and the others will hide in their classroom. If Yandere-chan has cleaned up the crime scene before the teacher arrives, the teacher will accuse the student of pranking her and will return to her classroom or the Faculty room.

Afterwards, they will refuse to talk to the player and will damage her reputation by 10 points every day if they are left alive.


Main Article: Strict

If those with the Strict persona see a corpse or a murder, they will guard the body and call the police.

If a teacher witnesses Yandere-chan murdering a student, or has realized that she is the murderer, the teacher will chase her and pin her to the floor once she is caught. If the player has at least rank 2 in Physical Education, they will instead enter a struggle minigame. It is not currently possible to outrun a teacher.


Main Article: Heroic

If a student with the Heroic persona witnesses a murder that is not a murder-suicide, they will try to apprehend Yandere-chan by chasing after her. If they catch up and grab her while she has a weapon, this will cause them to enter a "Struggle" minigame, where the player has to press several buttons rapidly in order to fight back and kill them. If she fails to get out of their grasp, they will pin her to the ground and a Game Over will appear. If Yandere-chan has no weapon, then she will be pinned down immediately once the student catches her. As of the February 15th, 2016 Build, the player can no longer struggle against an NPC if holding a large weapon that cannot be concealed, such as a katana. If more than one hero witnesses the player murder someone, only one will chase her while the other(s) remain in their shocked animation. If one hero is taken down, then another will run to Yandere-chan immediately afterwards. If Yandere-chan is in the Martial Arts Club, she will instantly win these fights without any player input.

Social Butterfly

Main Article: Social Butterfly

If a student with the Social Butterfly persona witnesses a murder, they will run to various places, ones that are typically crowded. Social Butterflies will then call the police, but if they witness another murder they will curl up into a ball, scared.

  • 7:05 AM to 7:15 AM: Social Butterflies will flee to the Locker Room.
  • 7:16 AM to 7:45 AM: Social Butterflies will flee to the plaza or the rooftop.
  • 1:10 PM to 1:30 PM: Social Butterflies will flee to the cafeteria or the rooftop.
  • 3:50 PM to 5:30 PM: Social Butterflies will flee to the Cooking Club.

Afterwards, they will refuse to talk to Yandere-chan and will damage her reputation by 10 points every day they are left alive.


Main Article: Coward

If a student with this persona witnesses a murder, they will beg Yandere-chan not to kill them and won't report the murder. However, this currently will not prevent Yandere-chan from getting kicked out of a club,[10] as that has not been implemented yet.


Main Article: Violent

The first delinquent who witnesses a murder will run after Yandere-chan with the weapon they are carrying. Once caught up, a combat minigame will begin. However, If Yandere-chan murders one of the Bullies they will react like a spiteful student.

Phone Addict

Main Article: Phone Addict

If a student with this persona witnesses a murder, they will take a picture and begin texting it to the police. If a student without this persona witnesses murder while holding their phone, they will take on this persona but will take more time to text the police.


Main Article: Spiteful

If a student with this persona witnesses the murder of someone who is bullying them, or someone who has a low reputation, they will congratulate Yandere-chan on the kill and promise not to tell anyone, before leaving the school. If she kills someone they like, they will run from the school and phone the police.


Main Article: Sleuth

If school atmosphere is above 80%, they will run to the Photography clubroom and call the police. If the school atmosphere is under 80%, they will take a picture of Yandere-chan to use as evidence like a Phone Addict would.


Main Article: Lovestruck

If a rival witnesses a murder, they will run to Senpai and tell him all about it. The player will get an instant Game Over unless Yandere-chan was wearing a mask when they witness her murder a student.[11]


This self-defense level can only be applied to students via JSON.
Students with this self-defense level will apprehend Yandere-chan if they see her commit murder. She will have no option to fight back, even with max strength.


Main Article: Dangerous

If a Dangerous student witnesses Yandere-chan commit murder, they will run up and pepper spray her, resulting in a Game Over. But if they discover a corpse, they will tell a teacher and guard the body with the teacher.

Student Council Run

Kuroko Kamenaga running to tell the teacher after seeing a corpse. December 18, 2017

Cleaning Up After Murder

In order to avoid being arrested by the police or lowering the School Atmosphere, Yandere-chan must dispose of the evidence of a murder. The player can use Yandere Vision to find any evidence of murders, including corpses and blood.

Avoiding Being Arrested

To avoid being caught, Yandere-chan only has to dispose of the evidence pointing to her as the murderer. She must dispose of the bloody weapon and uniform in the incinerator, and wash the blood off in the Shower Room and change into a clean uniform. If gloves were worn while committing murder, both the gloves and uniform must be disposed of, but the murder weapon can be left behind without her being caught, as it cannot be traced back to her. Also, she needs to retain a high sanity (around 60%-100%) so that she will not be taken into custody.

Avoiding Low School Atmosphere

Main Article: School Atmosphere

To avoid lowering School Atmosphere, Yandere-chan must clean up all evidence of a murder. The corpse must be disposed of. There are multiple ways to dispose of a corpse, such as using the incinerator, which is located in the disposal area behind the school, and guarded by the delinquents during certain times of the day. If Yandere-chan is a member of the gardening club, she can bury the corpse as an alternative, however, this method may not be a permanent solution.[12]

All blood pools must be mopped up, or else a teacher will discover the blood and call the police. Dragging a body or dismembering a corpse creates more pools of blood as it bleeds out, and stepping into pools of blood will leave bloody footprints. Yandere-chan, if her Physical Education is rank 2 or higher, can pick up the body and carry it instead in order to create less blood. If the area where the corpse was left is mopped up before dragging it, significantly less or no blood will follow when dragging it. Buckets, sinks, mops, and bleach are currently located all around campus, and can be used to clean up the blood.

She then must go to the Shower Room, take off her bloody uniform at her locker and wash off the blood at one of the stations. There, she can change into another outfit. In the future, she may be able to wear a rain coat in order to not get blood on her uniform.[13]

Corpses, body parts, murder weapons, bloody uniforms, and gloves, if used, can all be disposed of in the incinerator and burned. It will take one in-game hour, or 5 minutes in real life, for all evidence to be destroyed once the incinerator is activated.

After all evidence is cleaned up a student will be considered "missing" and missing posters will go up on the school walls. If the NPC that was killed and cleaned up was a club leader their club will close.


A missing poster.


The leader of the Occult Club going "missing".


Main Article: Framing

Yandere-chan has the choice to clean up their murder by framing another student for the crime. By doing this, School Atmosphere is fully restored, as everyone believes the killer was caught.

Failure to Clean Up

If Yandere-chan fails to clean up the mess from a murder, one of two things will happen.

  1. Yandere-chan's mess will be discovered by the police/teachers resulting in a game over.
  2. Yandere-chan's mess will be discovered by students, also resulting in a game over.

No Witnesses

If there are no witnesses, or none that are left alive, a teacher will come across the corpse(s) when the school day has ended while walking through the school to tell any lingering students to leave. If there's no incriminating evidence on school grounds, Yandere-chan will not be arrested. However, if there is any evidence with it, the police will arrest her. The School Atmosphere will drop by ten points per corpse discovered.

If pools of blood, bloody gloves, bloody limb(s), bloody weapon(s), or a bloody uniform are left out in the open after the school day ends, a teacher will find them and call the police. If she does not correct her sanity before school ends, then a teacher will see her, but not do anything. When the police arrive, they will search for any of these variables. If she is hiding a bloody weapon on her, they will arrest her as well.


The police will be able to tell that Yandere-chan was the murderer by scanning her DNA and seeing if it matches the bloodstained weapon, clothes, or gloves. They will also take her into custody if she displays erratic behavior. She may eventually confess to her crimes in certain Game Overs.


  • The bloodstains left on the ground after killing someone are inconsistent, and are individual puddles instead of a streak.
  • Bloodstains can be airborne, making them impossible to clean up.


  • Homicide was the first elimination method ever implemented in the game.
  • The school might close down if too many people are killed.[14]
  • In the future, it should be possible for Yandere-chan to murder people with her bare hands, but only under very specific circumstances.[15]
  • As of the August 15th, 2016 Build, Yandere-chan is now able to perform stealth attacks if she sneaks up on her victim.
  • As of the August 15th, 2016 Build, there are now sanity-based homicide attacks.
  • In the final game, there will be a unique ending if all the students are murdered in a single day.[16]
  • Murdered students' parents, as well as other students, will notice the disappearance of the murdered student.[17]
  • There's an upcoming feature where a flower will be placed on a student's desk after their corpse is found.[18] It has not been fully implemented yet. Currently, this only works for Kokona Haruka.


Oh my god! Is that a dead body?!
— Any student seeing a corpse.
Oh my god! This can't be happening!
— Any student witnessing Yandere-chan murdering a student or dragging a corpse.
I've got to find a place to hide!
— Any student with a Teacher's Pet or Heroic persona after finding a dead body that is being reported.
Don't talk to me! I know you killed someone. I'll make sure everyone knows what you've done.
— Most students that Yandere-chan interact with after they witnessed her being connected to murder.
I swear I won't tell anyone what I saw! Just please, don't hurt me!
— A Fragile or Coward student upon seeing the Player murder someone or dragging a corpse.
You won't get away with this!
— A Heroic student upon seeing Yandere-chan murder someone or dragging a body.
Gotta get to safety!
— A Social Butterfly upon seeing a corpse or witnessing homicide.
— A Social Butterfly witnessing Yandere-chan coming near her after witnessing Yandere-chan murder.
— A Social Butterfly witnessing murder a second time.
They had it coming! Don't worry...I won't tell anyone what I saw.
— A Spiteful student witnessing Yandere-chan murdering someone they dislike.
What have you done?!/How could you?!/Stop right now!
— A Teacher witnessing Yandere-chan attacking someone or dragging a corpse, followed by her chasing down Yandere-chan.
I have to tell a teacher!
— A Teacher's Pet upon discovering a corpse or witnessing the Player attack a student.
You psychopath! You won't get away with this!/I won't be your next victim!/What have you done?! You lunatic!/I'm not going down without a fight!
— A delinquent witnessing the player murder someone or dragging a corpse.
I ain't gonna shed any tears for her!
— A delinquent witnessing the corpse of a bully.


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