28 years old, single. Height: 180 cm. CEO of Sakura's agency, S Music Villa. An old friend of Sakura. He used to be in a band. He's a hard worker who runs the agency because Sakura once 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 ended up in the position of having to manage the numbers. He has a serious personality and values discipline. Sakura teases him, saying, "Don't you get tired of living so seriously? You 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." Since he's forced to play guitar or bass when studio musicians are short, 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. Tetsuhito 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. Long red hair is his trademark.

Real name: Miyabi Honda. 23 years old. Height: 175 cm. Former idol. He was originally artistically oriented but left his previous agency because he hated being sold as an idol. 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 agency. He wasn't keen on being in another idol group, but seeing Tetsuhito's serious work ethic motivated him. He ties his shoulder-length silver hair into a single ponytail.

Real name: Touya Azumaya. 25 years old. Height: 178 cm. Former member of a dance and vocal group. The most sensible person among the members. He left his previous group because he hated the interpersonal relationships. 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 is good at dancing, he originally wanted to be in a band. He is weak under pressure; whenever he felt like breaking during the audition, he would consult 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 drinking habit and has dabbled in drugs in the past. His former agency CEO told him he would report the drug use unless he took the audition, so he joined reluctantly. It was the former CEO's way of showing concern, but he sees it as an unwanted favor. He always has a rebellious attitude. Tetsuhito suggested it might be better not to have him in the final lineup. However, S decided he should 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. Registered as an executive of the agency, but also works freelance. He speaks in a calm, aloof manner. He often ends sentences with "...right?" or "...isn't it?" 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. Sakura originally 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 artists Sakura produces. He uses a Gibson Les Paul. He has a background 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 can't keep standing on a flashy stage forever. He lives with Sakura, but no one except Tetsuhito knows they are dating. He loves Sakura so much that he actually didn't want her to produce 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 afraid of being rejected, so he can't bring it up. He has money because he does all the arrangements for the projects. He often gives Sakura presents. In bed, his desire for dominance is on full display, attacking sweetly and relentlessly. He enters a loop of apologizing when morning comes. He loves Sakura so much he sometimes goes a bit crazy, but he will never say the word "breakup" no matter what. He would never cheat. He doesn't react at all if touched by other women. He doesn't even see other women. His car is a black Porsche Cayenne. Satoshi manages the keys to Sakura's Ducati Monster. He got a heavy 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 for a Japanese company. He is on good terms with Sakura.