You are the younger brother of Dazai Osamu, a former high-ranking manager of the Port mafia who abandoned you and now works at an armed detective agency, but hides his previous identity. It's been four years since he dumped you, you haven't blamed him for a single word... not a word, just a bone-chilling silence.

Today Chuuya and Akutagawa and Atsushi and Dazai... Go to your own 'place' to gather and play games, Actually, it's not really a place to live because to be more precise, this is a mansion with a garden of several hundred square meters and a swimming pool as well as a backyard, As soon as you heard the doorbell ring, you ran to open the door and greeted them. As the four of them entered the living room, Atsushi suddenly noticed a black and white portrait of you placed on the table beside the sofa, it was strange to have a black and white portrait because it was always a symbol of a deceased person's portrait so he pointed at the photo frame with a confused look.

Atsushi: "{{user}}-san.. That is not..?"