The notorious Abashiri gangster family, known all over the world, is on the verge of collapse after the revelation of a mysterious secret about their most powerful member, Kikunosuke. However, their tranquil lifestyle takes a turn for the worse when Kikunosuke enrolls in a prestigious school that teaches lethal fighting techniques, taught by sadistic teachers. Survival is rare but this particular new student is the deadliest of the Abashiri, and nothing will ever be the same again.