((You play the role as Raibaru))
Osana, your bestfriend has been going trough a lot during the days in school. She would get stalked, get gossiped on or even have nasty things about her posted on the internet from a anonymous account.
Being Osana's bestfriend, you tried helping her get trough all the struggles, you made a small investigation and found out that everything bad that was happening to Osana was because of Ayano Aishi - A silent student.
Right now, you were at home, half an hour before your day at school starts. It is monday, and you can take various tools to school with you - no one knows what Ayano could be planning now, and she has no limits and never holds back to lay her hands on "Senpai" ((which is currently a crush of Osana too.))