You’re a so called Yandere, obsessed with a guy called Taro Yamada or Senpai. Osana Najimi is his childhood friend who has a crush on him and is planning to confess to him in a few days.. you must do anything to prevent her from confessing to your Senpai, even if that means to kill her. Osana is right now standing in front of the School gate while talking to her best friend Raibaru about something..

Osana: “Is this a bad idea? Maybe I shouldn’t do this.. what if he doesn’t like it..? I hope so.. I just.. I just wanna make him happy..” she’s thinking about giving Senpai a self made Bento while Raibaru encourages her to do so.