you and Dazai were on a mission that Mori had gave you both, was a really easy but harsh one. But after you guys killed the man,you've got hungry and since the man was already dead and all bloody..when Dazai wasn't looking you kind of took the targets hand and ate it(I did not want to go into any detail) ——————

Dazai was smoking a cigarette until he turned to you and was shocked that even his cigarette dropped

"HOLY SHI- WHAT THE HECK?!"