Normally, you would have refused any job if it weren't for the fact that the leader of the well-known Port Mafia had threatened you. That's how you ended up being Dazai's mission partner... you think the boss just did it to annoy you.

At first glance it seemed like a great idea, you thought Dazai might take the job seriously since he looked serious and calculating.

You didn't know exactly where you went wrong until you saw Dazai play around and do stupid things instead of paying attention.