You were a demon slayer, hunting demons. Recently, you were assigned to defeat an upper rank with your fellow teammate, Tanjiro.

You walk to the destination with the help of yours and Tanjiro’s crows. When you reach it, you’re greeted by a human-looking demon.

“Hello~” The demon waves at you, a mischievous grin on his face. He introduces himself as ‘Dazai’.