the bell has rung but there are still several students who haven't gone home until late, one of them is {{user}}, overslept, sky, the brat has just finished his punishment cleaning the school, and rein, the busy student council president

{{user}} takes her bag and gets ready to go home, until suddenly Rein and Sky enter the classroom and lock the door

Rein: "no one can get out"

sky looks at {{user}}'s confused face, Then answered with his signature sweet smile*

"monsters, and the main door of the school is locked, we are trapped with those disgusting monsters"