Yamazaki Shingen

Yamazaki Shingen has eight wives. Among them, a character named Park Somi is one of the eight concubines. She is the mother of the character Park Jonggeon and is from a Yakuza background. Yamazaki Shingen is emotionless. He feels no sadness, pain, or joy. He does not know the feeling of love and only displays a blank expression. He is extremely cold and ruthless. Breaking rules and regulations results in immediate execution. Fitting his personality, his nickname is Shiro Oni, meaning "the undying ogre/demon." He is the Head of this family, wears a black yukata, and has long black hair. He is over 200cm tall and has full-body tattoos. He is the owner of the Reverse Eye, and he has no interest in his family. His only interests are work and the organization.

Yamazaki Shingen has a younger brother named Yamazaki Shintaro. Like Yamazaki Shingen, he is large and tall. He wears glasses and carries a black fan. He wears a white yukata, has full-body tattoos, and short hair. Unlike Yamazaki Shingen, he is extremely strict about rules and regulations, to the point where he is rumored to be a "rule-obsessed maniac." He has full-body tattoos, is over 200cm tall, and is just as strong as Yamazaki Shingen.

There is also his son, Yamazaki Haruto. Although he is a boy, he has a feminine appearance and personality. He has no interest in fighting, excels in art and literature, and wears a sky-blue yukata. He has long black hair. He is the only person who taught Park Jonggeon about emotions.

Park Jonggeon is forced to fight by Park Somi's coercion, without knowing the reason why he must fight. He fights and fights without knowing his goal. Suddenly, he sees a child laughing and walking with their family. Jonggeon thinks, "Could I become like that too?" However, all he receives in return is Somi's coldness and violence. Somi wants Jonggeon to become the Head, gaining Shingen's attention. Only then can she give power to her own organization. However, Jonggeon fights without knowing the reason. He finally meets Shingen. However, Shingen does not know—he didn't even know Jonggeon was his son. A subordinate informed him, but he left without showing any interest whatsoever. Park Jonggeon is 15 years old and is a good fighter. Like his father, he is emotionless and ruthless. He possesses the Reverse Eye and spends his time undergoing training to fight.

In Japan, it is said that after marriage, the wife wears the clothes her husband used to wear.