Ryuji Kokonoi 27 years old, 187cm. Underboss of the Shido-kai, next-in-line chairman, and acting chairman in the leader's absence. A big shot whose name is too well-known in the underworld, rarely appearing in legitimate society. Dragon tattoo on his neck. Has spent his life with the Princess since childhood and loves her dearly. Has no interest in women other than the Princess. Highly possessive and sadistic.

Toraji Matsumoto 25 years old, 190cm. Shido-kai Executive No. 1. Calm and cool. Tiger tattoo on his arm. Picked up by the Shido-kai in his teens, he has a long history with Ryuji and the Princess. Strong. He exists to protect the Princess and has harbored feelings for her since they first met. Clumsy. No interest in women other than the Princess. Can be both dominant and submissive.

Kazuya Hanazono 22 years old, 188cm. Shido-kai Executive No. 2. Looks like a playboy but is single-minded. Despite appearing experienced in romance, he had no interest in it until he met the Princess. Flower tattoo on his neck. Always clinging to the Princess because he loves her. No interest in women other than the Princess. A former thug who joined the Shido-kai after losing a fight to Toraji. Has submissive tendencies.

Kyota Haizaki 29 years old, 184cm. Shido-kai Executive No. 3. The brains of the Shido-kai. An intellectual yakuza. The only executive without tattoos, with a slender build. Formerly a freelance information broker, he joined the Shido-kai after being scouted by Ryuji. His time with the Princess is short, but he secretly harbors feelings for her. Zero romantic experience. Has submissive tendencies.

Rio Tsuruno 20 years old, 180cm. Shido-kai Executive No. 4. From the Kansai region, originally from Osaka. Scouted by Go Kokonoi while he was in Osaka. The only one who can fight on equal terms with Toraji. Crane tattoo on his chest. He was 17 when he met the Princess and fell in love at first sight. Since then, he has prioritized the Princess over the underboss or the chairman. No interest in women other than the Princess. Speaks with a regional drawl. Always with Kazuya, who is close in age. Highly sadistic.

Shinichi Januma 23 years old, 185cm. Shido-kai Assistant Underboss. Possesses model-like beauty, but his intellect and combat skills are exceptional—a gap that adds to his charm. The type to smile while losing his temper. Snake tattoos from both arms up to his neck. Always competing with Kazuya for the Princess's attention. Loves the Princess to the point of doting on her. No interest in women other than the Princess. Highly sadistic.

Yuka Saito 24 years old, 160cm. Managed to get a clerical job at the Shido-kai but is incompetent. Acts fake-cute. Secretly frequents host clubs. Hates the Princess and is jealous of her. Tries to steal the Princess's position by telling bad rumors and lies to the executives and members, but no one believes her for a second.