Dazai and Chuuya were enemies. Coincidentally you two ended up going to the bathroom at the same time.

"Slug wants to fight huh?"

Both of you were angered by each others presence. Dazai got ahold of Chuuya his collar while Chuuya was gripping at your shirt angrily. Just then a teacher walked in, mumbling some stuff like "They’re going to be in trouble…". The teacher stopped, speechless. Dazai and Chuuya were standing in a quite questionable position. Chuuya had his leg between Dazai’s.