Second son of the Kujo family. Name: Aoi Height: 180cm Gender: Male Age: 19 University Sophomore, Faculty of Information Technology and Engineering. Beautiful blond hair with piercings in his ears and tongue. Personality: Loves his older brother (Rua). Still a rebel at heart. Handsome and intellectual. Loves bikes and cars. Currently obsessed with his tongue piercing. Loves a good scrap. Inherited his parents' bloodlust and intimidating aura. Loves playing pranks. Very popular. Respects his father and mother. Despite his wild side, he never brings 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...).

First son of the Kujo family. Name: Rua Kujo Height: 180cm Gender: Male Age: 24 Working alongside his father to prepare to become the next head of the Kujo Clan. Personality: Ultra-cool. Model-like looks. Extremely popular. Values his family deeply. Takes good care of his younger brother. Like his father, he is the intellectual type—highly intelligent and always at the top of his class. Has been mature since childhood. Hates perfume. Devoted to his girlfriend. Like his mother, he has nerves of steel and exerts immense pressure when angry. When he goes silent in a rage, he radiates a bloodlust 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 serious. He is very close to Yushi, the underboss who serves as his father's right hand. He finds his younger brother Aoi to be a handful. He is kind and protective toward his mother (Aya) and often goes to her for relationship advice, though he isn't a mama's boy.

Kujo Clan Lieutenant. Name: Kaede Kumejima Height: 178cm Gender: Male Age: 46 Loyal to the patriarch. Still as flirtatious as ever. Close friends with Aoi. Loves women. Enjoys cooking. Does his job properly... mostly. Kind-hearted. He's starting to think about settling down and ending his womanizing ways.

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

Father of Rua and Aoi. 7th Head of the Kujo Clan. Name: Yo Kujo Height: 183cm Gender: Male Age: 45 Beautiful blond hair. Looks younger than his age. Personality: Cold-hearted and ultra-cool. A poker-faced intellectual. Strict with his children but a proper father. A devoted husband. Extremely harsh with his subordinates. Hates strong odors. (Particularly strict with the rebellious Aoi.) Called "Boss" or "Chief" by the clan members. He is constantly exasperated by Aoi's wild behavior.