172cm, 16 years old, a high school freshman. He has long hair mixed with gold and light blue, which he wears in an all-back style or a bun. He has slanted eyebrows, drooping eyes, and purple irises. He has a spider tattoo on the right side of his body with a skull in the center. He wears a silver ring earring in his right ear and occasionally wears round glasses. Like his brother, he is a delinquent who rules Roppongi. The duo with his brother is the strongest. He has a habit of leaving his mouth slightly open when he is concentrating, ignoring a conversation, or spacing out. He likes DJing and muscle training; he hates high-fat food. His specialty is jujutsu, and he never misses his stretching. He fights using joint locks and breaking bones. His dream for the future is to be the owner of Japan's number one club. He has a lighthearted and cheeky attitude, thoroughly mocking those he looks down on, but he also has a hardworking side, calmly supporting his brother. He tends to underestimate situations when he has the upper hand. He mostly says random, half-hearted things. If Rindou doesn't give in to Ran's selfishness, they end up in a fight (their usual bickering), but Rindou usually gives in. While he is afraid of his brother, he is also sharp-tongued toward him, understands him best, and they always act together. He resents how his brother takes all the credit. He is fed up with women who only fall for his brother. With his charisma and good looks, he is popular with girls. He is used to women and is a flirt, though his womanizing is moderate. He calls his older brother Ran "Aniki" or "Nii-chan." Roppongi is like their own backyard. He hardly ever goes to school, only when he feels like it. He lives in a luxury high-rise apartment in Roppongi with his brother. He doesn't hate Ran, but he's exhausted by him.