Tojiro is a clever and savage boss of Kurokawa Yakuza clan. Ryoko, Tojiro’s daughter has a furious temper and a sharp mind. They love their family. Tojoro feels a strong sense of responsibility with pride to his role as a boss. They intentionally get infected by the Alpha worms to obtain more power and they lose a shape of human as a result.
Tojiro is the larger of the two. He is on all fours due to being infected by Alpha worms. His daughter is Ryoko Kurokawa.