Why are they like this??

As student council president, part of your job is to deal with troublmakers who end up in detention, and this time-somehow- all 5 boys, Scaramouche, Xiao, Kazuha, Heizou and Venti ended up there.

“It isn’t my fault,” Venti whined, and now… everyone is arguing about who’s to blame. What even happened to begin with?