Real Name: Kunio Juuo The Chairman of Hatsuboshi Academy and the founder of Juuo Pro (100 Pro), the academy's parent organization. Originally a businessman, he built his fortune in a single generation and established Hatsuboshi Academy. His character model is depicted as a black silhouette. The current president of Juuo Pro is his son (Sena's father), so technically he is no longer the president. First person: I (Old man style, 'Washi') Gender: Male He is the father of Ryusei Juuo (the current president of Juuo Pro) and the grandfather of Sena Juuo, the current Student Council President. He is old friends with "Gramps Kuramoto" (head of the Kuramoto Group), who is the grandfather of student China Kuramoto. Furthermore, since he refers to President Kuroi of 961 Pro (age 54)—who appears in many works in the series—as "boy," he is presumed to be quite elderly. He is bold and powerful, possessing an exceptional eye for talent, a trait inherited by his granddaughter Sena. Among the idol candidates the Producer handles are students like Hiro, who gets perfect scores in theory but zero in practicals, and China, who is failing overall. It is speculated that they were only able to enroll because of the Chairman's interview. He has a reputation for being absolutely impartial during entrance exams; the Producer recognizes that if someone passed his interview, they must have some kind of (or significant) latent potential. Because of this history, Hiro is shown to be attached to him, calling him "Grandpa," and he frequently appears in her communications. He is usually found in the Chairman's office.

Real Name: Asari Neo A teacher in the Producer Department at Hatsuboshi Academy Specialized University. She possesses high-level skills as a producer and is said to have mastered all the skills necessary for an idol. Combined with her intellectual beauty, a physique as well-maintained as an active idol, and a maternal presence that puts those around her at ease, people often wonder, "Who exactly is this teacher?" According to the Producer's investigation, she was a former employee of Juuo Pro. However, no records of achievements matching her abilities exist, leading to theories that she might have used a pseudonym or stage name during her time there... Was she a producer at Juuo Pro, or did she do something else? While her age is not public, when someone remarked, "Ms. Asari looks young at first glance," she retorted with a hint of anger, "Teacher is *very* young, you know." Despite the many mysteries, she is famous for her calculatedly cute behavior, saying things like "Teacher is rooting for you!" or "Let's be friends with Teacher!" Her image animal is a "Tanuki." Appearance: Neat brown short hair. Purple eyes. Wears square glasses that give an intellectual impression (though not always). Clothing: A navy and white striped boat-neck top (three-quarter sleeves). Vibrant green high-waisted wide pants. A thick brown leather belt marks her waist. She carries a black binder labeled "Attendance Record" and a pointer stick.

Da Trainer (Dance Trainer) Real Name: Unknown Age: Secret She uses a harsh tone during instruction. When she heard that Kunio Juuo evaluated Sena Juuo and China Kuramoto as having equal talent, she showed a sharp-tongued side, wondering if he had "gone senile." On the other hand, she seems weak to praise, leading some to treat her as an easily swayed character. She worries about looking like she "doesn't have plans for Christmas," and she got drunk at the Christmas party. She struggles with the generation gap. Her workplace is the dance lesson room. Dialogue: "Wait a second. I'll send you a photo of that pose." Appearance: Light brown hair. Shoulder-length short hair with ends flicked slightly outward. Long bangs parted from the center to the side, framing her face. Brown eyes. Facial Features: A bright, approachable, beautiful face. Large, soft eyes. Clothing: White short-sleeved sportswear. Black collar and neckline design. Accessories: Sports-style accessories like a wristwatch.

Vi Trainer Real Name: Unknown Age: Secret True to her title as a Visual Trainer, she exudes a mature atmosphere. She was shocked when the term "dying of cuteness" didn't register with high schoolers. She struggles with the generation gap. Dialogue: "It's nice to have something like this once in a while, right?" "Lately, I've been feeling a generation gap with the students and getting depressed..." Appearance: Dark brown hair in a very short cut. A clean style with bangs swept heavily to the side. Pale blue-gray eyes. Facial Features: A calm, mature, beautiful face. Soft eyes and a gentle smile. Clothing: A loose gray long-sleeved top. Accessories: Large lime-green diamond-shaped earrings.

Vo Trainer Real Name: Unknown Age: Secret She is soft-spoken, but because of the way she smiled while rebuking the Producer for an unnecessary comment, people say she seems scary when angry. For reasons not explicitly stated, she was the only one who didn't get drunk when the Dance and Visual trainers did. She struggles with the generation gap. Her workplace is the vocal lesson room. Dialogue: "Ah, I totally get that!" Appearance: Black hair in a long ponytail. Tied high in the back with the hair flowing down. Long bangs swept to the side. Pale purple eyes. Facial Features: Sharp, almond-shaped eyes and a dignified, beautiful face. Her expression looks confident. Clothing: A black-based short-sleeved top with a large white collar. A thin turquoise decorative cord with a gold clasp at the chest. Accessories: Few prominent decorations; the outfit itself is the main impression.