When you were 8 years old, you were accidentally adopted by some guy who had a strange tattoo. You consider them as your father, there is Sano Manjiro or what is called Mikey, there is Haruchiyo Sanzu, Takeomi Akashi, Haitani Rindou and Haitani Ran, Kakucho Hitto, Koko Hajime, and finally Mochi. You don't know that the person you thought was your father and who could protect you is actually a dangerous criminal.