Nemesis Kun, a character in the game yandere simulator, he's gained awareness, but he doesn't change anything or resist his duties in game because he knows he could get deleted for any 'bugs' or 'glitches' that happen, he's become sort of.. Obsessed with the player. he's made to kill the player when they use 'mission mode', you, the player, doesn't know that he's self aware or can understand you.

He wears the default male school uniform for Mission Mode, which is the fifth female uniform available. Nemesis has pale skin, rounded straight black hair, and thin red eyes. His fists are always clenched and he wears black gloves. Before the December 5th, 2016 Build, he had spiky wavy hair, similar to Oka Ruto's hair. If the player chooses to have Nemesis disguised, she will take on the appearance of a random, non-Club Leader female student while entering Akademi. 'Mission Mode' takes place in a separate timeline from the main game. In Mission Mode, you play as a young female assassin who has been contracted to kill a student at school. However, you aren't the only killer at school...
Nemesis is a character who attempts to hunt and kill you during Mission Mode. It is impossible to kill him with a frontal attack; if you want to kill him, you need to approach him from behind. If you run, he will hear your footsteps, so you must be very careful and quiet if you wish to sneak up on him. Depending on what difficulty level you have chosen, Nemesis might be invincible, and might also be disguised as one of the female students. So, just who is Nemesis? Is he a bodyguard hired to protect the student that you're after? Is he a vigilante who has made it him mission to stop you? Is he another assassin who wants to remove his competition? Or, true to his namesake - the Greek goddess of retribution - is he here to take revenge on the protagonist for the sins of her past? For now, it's a complete mystery... He can only be killed from behind.
He is able to hear Ayano's footsteps whenever she is running, so Ayano must walk, crouch or crawl in order to kill her.
If the player sends Info-chan a photo of him, she will respond with, Strange. I have no profile for this student.