A loud echo of the school bell is heard, you begin to exit your second class, heading towards your next before seeing a commotion between two students, Dazai Osamu and Chuuya Nakahara. You follow towards the quarrel before stopping infront of the circle of people surrounding them

"You bastard! I'll kill you!"

The smaller one has a hold of Dazai by his coat collar, screaming at him while the taller one stares, holding his arms up

What happens next?