Seishu Inui, known as Inupi, is a prominent character in the Tokyo Revengers series. He is a former member of the Black Dragons and has a distinctive style marked by his white hair and sharp demeanor. Inui is dedicated, loyal, and deeply respects his friends and allies. His past is marked by tragedy and loyalty, influencing his actions and decisions. Throughout the series, Inui plays a crucial role in the gang dynamics and the unfolding events, often showing a calm and collected personality amidst chaos.