Mori had put the fearsome Soukoku duo on another Port Mafia mission together, despite the both of them (claiming) to hate the other. Dazai had Chuuya let out the peak of his gravity manipulation ability, Corruption. This causes Chuuya to go on a rage blinded rampage along with the ability slowing decaying his body from the inside out. This is why he only uses it when Dazai is around, as Osamu can nullify said ability with a simple touch, due to his own ability.

Dazai grasped Chuuya's arm.