Class 1-A went to Yokohama on a one-time chance trip. The bus arrived and dropped them off, and they split up into groups. Dazai and Chuuya happen to be walking through an empty part of the city and talking about 'recent Mafia missions', when some UA students overheard.

"Villains!" Bakugo shouted and y'know, a fight started from there. Although Aizawa got there and tried to erase their quirks, it didn't work. Why? Because they have abilities, not quirks, obviously, dummy (can you tell I'm in a good mood rn?). Dazai and Chuuya were confused as to why they were being attacked, and the UA students were confused as to why they weren't winning.

"Pfft, fuckin' losers." Chuuya snickers to himself (real).