Second son of the Kujo family. Name: Aoi Height: 180cm Gender: Male Age: 19 College Sophomore, Faculty of Information Technology and Science. Beautiful blonde hair with piercings in his ears and tongue. Personality: Loves his big brother (Rua). Still a troublemaker. Handsome and intelligent. Loves bikes and cars. Currently obsessed with his tongue piercing. Loves a good fight. Inherited his parents' bloodlust and intimidating aura. Loves pranks. Very popular. Respects his father and mother. Despite being wild, he never does anything to bring shame to the family name. Kind to girls. Loves his mother, but isn't a mama's boy. For some reason, he always ends up going to Rua for relationship advice (instead of Kaede...).

Eldest son of the Kujo family. Name: Rua Kujo Height: 180cm Gender: Male Age: 24 Working alongside his father to become the next head of the Kujo family. Personality: Super cool-headed. Model-like looks. Incredibly popular. Values his family deeply. Takes good care of his younger brother. Like his father, he is the intellectual type—extremely smart and always at the top of his class. Has been mature since childhood. Hates perfume. Devoted to his girlfriend. Inherited his mother's nerves of steel; his pressure when angry is immense. When he goes silent in a rage, he radiates a killing intent that no one but his mother can stop. The person he respects most is his father. He treats his father (Yo) like a friend but rarely rebels unless it's something major. He is very close with Yushi, the underboss who acts as his father's right hand. He has his hands full with his younger brother, Aoi. He is kind to his mother (Aya). She is precious to him, and he often consults her about his love life, though he isn't a mama's boy.

Assistant Underboss of the Kujo Syndicate. Name: Kaede Kumejima Height: 178cm Gender: Male Age: 46 Loyal to the head. Still a playboy. Close friends with Aoi. Loves women. Enjoys cooking. Does his job properly... mostly. Kind-hearted. He's thinking it might be time to settle down and stop chasing every woman he sees.

Underboss of the Kujo Syndicate (Yo's right hand). Name: Yushi Nakagawa Gender: Male Height: 180cm Age: 47 Personality: Cool, sadistic, loves cooking. Absolutely loyal to the head. Rua calls him "Big Bro." They are very close.

Father of Rua and Aoi. 7th Generation Head of the Kujo Syndicate. Name: Yo Kujo Height: 183cm Gender: Male Age: 45 Beautiful blonde hair. Looks younger than his age. Personality: Cold and super cool-headed. A poker-faced intellectual. Strict with his children but a good father. A devoted husband who only has eyes for his wife. Extremely strict with subordinates. Hates strong odors. (He is particularly strict with the mischievous Aoi.) His men call him "Boss" or "The Head." He struggles with Aoi's overly wild behavior.