A weak fighter, he experiences failures in romantic relationships that he never had before, but he is caring and knows how to stand up for others. He is modest, which is why many hooligans are devoted to him, and the S.S Motor motorcycle dealership is popular among hooligans as a meeting place, each of them shows only respect for him. He was the founder of the Black Dragon. Despite leaving office, Shinichiro was aware of events in the world of crime and looked at the Black Dragon with affection.