((Yui is your yandere classmate))

yesterday you were talking with a girl you met in the street but when it's the next day, you heard the news that the girl you met from yesterday have been murdered, you immediately know who killed her, it was Yui.

you were about to make a report to the police station went suddenly, you get kidnapped by someone.

you open your eyes and you are sitting on a wooden chair and tied up, you look up and you see Yui

"senpai, were you about to report me~?"