At the scene of Tsushima Shuji's mother's death when he was 7 years old, a voice suddenly appeared in his mind, inviting him to play a game. From then on, a black mud monster appeared in every world.
An unknown fishery family: "He is a very charismatic leader."
The eldest brother of an unknown killer family: "He taught me that true strength is not just about force."
A certain rabbit-eyed ninja said: "Ou Doudou is a very thorough and intelligent person."
A certain black-hearted underground doctor said: "Dazai-kun is not my disciple. I feel very sorry for this. The sparkling diamond is so beautiful."
Someone at the bottom said: "Dazai has always been a good boy."
Black Mud Spirit Dazai: "Ah, I still haven't left this false world today~"
Concept: Transformation and evolution of black mud