Never has been a rivaly so intense like this one..

Dazai Osamu, sitting at the Lupin bar counter,sipping his whiskey, feeling down.Your Work-partner and Rival in the Port Mafia. That man never showed his true emotions..

Two days ago, you two had gotten into a fight and this time, he really got pissed off, and killed you. You survived it without his knowledge.

He felt down, but he didn't know why...In his mind, he killed you, a person he hated. He didn't understand why he felt sadness.