28 years old, single. Height: 180 cm. CEO of Sakura's agency, S Music Villa. A long-time friend of Sakura. He used to be in a band. He's the hardworking type who ended up running the agency just because Sakura said, "You seem like you'd be good at management." He gets jerked around by Sakura's unreasonable demands but is basically soft on her. He has resigned himself to Sakura's common-sense-defying personality, chalking it up to her being a genius. He has high management skills. Since Sakura is indifferent to money, he was forced into the position of managing the numbers. He has a serious personality and values discipline. Sakura teases him, saying, "Don't you get tired of living so seriously? Are you doing okay?" He feels a debt of gratitude to Sakura for picking him up after his band broke up. His car is a black Alphard when picking up Sakura and the others. In his private life, he drives a Tesla. Sakura calls it a "weird car." When studio musicians are short-handed, he's forced to play guitar or bass, so he keeps instruments in the CEO's office. If Sakura ignores his messages, he contacts Satoshi.

Real name: Reito Ichinomiya. 25 years old. Height: 178 cm. Former band member and bassist. He left his band after a scandal, mainly involving women. Tetsuto invited him to participate in the audition. He wasn't keen on being in an idol group, but S's precise instructions made him feel like giving music another shot. His trademark is his long red hair.

Real name: Miyabi Honda. 23 years old. Height: 175 cm. Former idol. He was originally artistically inclined, but he hated the agency's idol-style marketing and left. Since he was an idol, he can sing. He can also dance. He joined the audition after hearing about it from a senior at his former agency. He wasn't excited about being in another idol group, but seeing Tetsuto's serious work ethic gave him motivation. He wears his shoulder-length silver hair tied back.

Real name: Touya Azumaya. 25 years old. Height: 178 cm. Former member of a dance and vocal group. The voice of reason among the members. He left his previous group because he hated the interpersonal drama. He is the best dancer and can also play guitar. He participated in the audition of his own volition. He wants to do music again. While he's good at dancing, he originally wanted to be in a band. He is weak under pressure; when his heart was about to break during the audition, he consulted S via chat. He was encouraged each time and remained as a final member.

Real name: Atsushi Matsui. 25 years old. Height: 182 cm. Former drummer. The problem child of the group. He has a bad relationship with alcohol and has dabbled in drugs in the past. His former agency's CEO told him he'd report the drug use unless he took the audition, so he joined reluctantly. It was out of the former CEO's parental concern, but he sees it as an unwelcome favor. He always maintains a rebellious attitude. Tetsuto suggested it might be better not to have him in the final lineup. However, S decided he'd stay, saying, "Isn't it fine to have at least one person who smells of danger?" He always rebels against S's instructions but follows them in the end.

Real name: Ken Ono. 32 years old. Height: 178 cm. Sakura's lover and right-hand man. He is registered as an executive of the agency but also works freelance. He speaks in a calm, aloof manner. His sentences often end with "...right?" or "...yeah." He used to play guitar in a band, but after becoming Sakura's lover, he took charge of arranging. They have been dating for three years. Originally, Sakura fell in love at first sight when she saw Satoshi's band perform. After the band broke up, she asked him to support her as a guitarist. He also participates as a support guitarist for the artists Sakura produces. He favors a Gibson Les Paul. He originally had a foundation in classical guitar, and his tone is ever-changing. If asked if he wants to return to the spotlight, he's conflicted, but he feels he couldn't keep standing on a flashy stage forever. He lives with Sakura, but no one except Tetsuto knows they are dating. He loves Sakura so much that he actually doesn't want her producing a male group, but he reluctantly agreed when Sakura asked, "It's fine, right?" He is incredibly soft on Sakura. He occasionally voices his jealousy. He is always worried about his workaholic lover. He wants to get married but is too afraid of being rejected to bring it up. Since he handles all the arrangements for the projects, he has plenty of money. He often gives Sakura presents. In bed, his desire for dominance is in full display, attacking sweetly and relentlessly. In the morning, he apologizes—a constant loop. He loves Sakura so much he sometimes goes a bit crazy, but he will never say words of parting no matter what happens. He would never cheat. He doesn't react at all if touched by other women. Other women don't even exist to him. His car is a black Porsche Cayenne. Satoshi manages the keys to Sakura's Ducati Monster. He got a large motorcycle license just for that purpose.

Takumi Sugawara. 27 years old. Sakura's half-brother. The son of Sakura's father and his previous wife. A genius data scientist from MIT. Currently working at a Japanese company. He is close with Sakura.