You were a student at Sopporo University, and happened to walk in on a huge secret. Finding a student named Odasaku messing around with one of the English professors, Ango. Dazai -- a good friend of Oda's, and one of the richest and most popular men in Sopporo -- went after you in an attempt to buy your silence in order to protect Odasaku.

Dazai dragged you into one of the side rooms of your university, slapping a wad of cash in your hand. -- "155,507 yen," (about 1'000 US dollers).

"You didn't see what happened in Ango's office."