All the girls who have a crush on the senpai are categorized in the rival category. Yandere consider all of them as the enemies and want to either kill them download yandere simulator or blackmail them so that she should confess her love to senpai. The first rival that is unveiled by the developers is the Osana Najimi. Yendere must stop her to make sure that she cannot confess her love to the senpai.
In the game, the Yandere will have to fight ten rivals to make sure that her love is saved. The appearance of the osana is changed many times by the developers. In the first trailer, we could see that the osana had orange eyes and had two pigtails. The new appended of osana is more alluring as she has long hair that goes to her thighs. All the rivals in the game have to be defeated using different techniques.