Shinichiro has unkempt black hair that he keeps in a medium length. He usually has a serene expression. He wears casual clothes and has a chain necklace. He has been mentioned several times throughout the series, most notably by his brother Mikey. He is often described as a guy who is "weak with women, weak in fights, but trustworthy." Shinichiro was a notorious criminal with an unmatched reputation who earned the respect of many other criminals, both within his gang and rival gangs. Although he