How to poison a girl in Yandere Simulator

(Last updated June 3rd at 1:00 AM)

If you want to download the most recent build, click here.

As usual, the latest YouTube video covers the biggest new addition to the game:

This video runs a few minutes shorter than most of my usual progress reports, but it’s not because of a lack of progress. If you need convincing, just check out all the stuff that was accomplished over the past two weeks.

Here’s what else is new in the latest build:


  • If the player invests 20 Study Points into the Chemistry stat, they will unlock the ability to locate poisonous substances in the school’s Chemistry Lab.
  • There is now a Chemistry Lab. In the Chemistry Lab, the player can find a bottle containing a poisonous substance.
  • There is now an event on Tuesday in which a girl will leave her lunch unattended so that it can be poisoned.
  • If a poisoned girl is discovered, the teacher will call the paramedics instead of the cops. This will instantly end the school day.
  • You can also just head straight to class after poisoning a girl to skip straight to the paramedic sequence.

Bug Fixes

  • Fixed bug that would cause Yandere-chan’s laugh to loop at the “end of day results” screen if she was laughing when the clock ran out.
  • If you mute and then un-mute the game’s music, it will now return to its previous volume when un-muted.
  • The player can no longer leave a note asking a student to meet them at a time that has already passed.
  • Fixed bug that would cause a student’s corpse to disappear if Yandere-chan went to class.
  • Fixed bug that would cause notifications and subtitles to show up in screenshots.
  • Fixed bug that would allow the player to tranq multiple students in the tranq room.
  • Fixed bug that would allow the player to take panty-shots through a chair.
  • Changed the custom drill hair texture from Grayscale to RGB.
  • Improved the “Punished Yandere” easter egg.

June 1st Edit:

Oops! A bunch of terrible, game-breaking bugs were found! The latest build has the following fixes:

  • Moved the purple-haired girl’s lunch break up to Wednesday so that the player has enough time to invest at least 20 study points into Chemistry.
  • Fixed bug that was causing the game to soft-lock at the Expelled screen during certain circumstances.
  • Fixed bug that was cutting off the poisoned girls death audio clip upon her death.
  • Fixed bug that was allowing players to still take panty shots of the gamer girl.
  • Fixed bug that would make a poisoned girl’s bento disappear.
  • Fixed bug that broke tranquilizing.

June 3rd Edit:

  • Fixed bug that would trigger the “Teacher discovers poisoned student” outcome even if a poisoned student had been incinerated.
  • Fixed bug that would cause the day to keep progressing even if the “end of day results” screen was displaying.
  • Fixed bug that would cause teachers to think that Yandere-chan is trespassing during non-trespass hours.
  • Fixed bug that prevented the player from going to class if a tranquilized corpse was on campus.
  • Added a new easter egg.

By the way, several of the features that I added over the past month were only possible thanks to help from my esteemed colleague Saracen, who is also making a game set in a Japanese high school! Check it out sometime!

234 thoughts on “How to poison a girl in Yandere Simulator

  1. Pingback: Yandere Simulator Intros Two New Killing Methods and More

  2. Perhaps, as part of a history exhibit or chemistry lesson, the teachers would have a cyanide ampoule for the sake of aurhenticity. Of course, it should be heavily guarded or hidden, but enough psychology points or eavesdropping on the the teachers could reveal its location. From there you could implement a feature: lead a student somewhere and force them to use the ampoule (the action would involve breaking the ampoule). From there, cyanide poisoning would kick in and they would die within 15 minutes. By the way, if this becomes a reality, I’m vouching for Kokona to die. Again.

  3. Pingback: A First Glance and Understanding of… Galatea (The Modular Waifu Simulator)! | The Gaming Realm

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