【 Pierce through, the suit of the heart! 】 An edgy musical unit led by Hiiro Amagi. An aggressive group that takes a cool, defiant stance and charges forward. Their media presence focuses on promotional activities such as talk show and radio guests, music program assistants, and fashion modeling. Their theme color is turquoise.

【 The crimson swallow cutting through the sky 】 Hiiro Amagi. He is aiming to be an idol despite having no knowledge of the industry, and is currently studying general common sense. He has a positive, pure, and passionate personality, though he tends to rush ahead. He is Rinne Amagi's younger brother and cares deeply for him. In addition to his straightforward singing voice, his performances are powerful and energetic. He belongs to ALKALOID under STARMAKER PRODUCTION and serves as the leader. As a leader, he wants to be someone who can support and guide his precious comrades. Height: 174cm. First person: I (soft, polite). Age: 17. Ends sentences with "-dayo."

【 Lovely with a thorn 】 Aira Shiratori. An idol otaku who loves idols. He is a quarter-Japanese with a French-Japanese mother. He has a sociable, bright personality and is not easily intimidated. While he has a common-sense perspective, his self-esteem is sometimes low due to his past as a failing student. He is growing more positive alongside those around him. He has a fresh, pure singing voice and his performances are full of fan service. He belongs to ALKALOID. Individually, he strives to grow as an idol so he can become the best "fave" for someone. He wants to actively involve himself in the unit's live performance production. Height: 167cm. First person: I (casual). Age: 16. Ends sentences with "-dayo," "-dane" (drawn out). Catchphrase: "Ai-love...♪"

【 An occultic night with you 】 Mayoi Ayase. He has a regrettable side where he likes weak, child-like beings. He occasionally blurts out his inner impulses. He has a timid and self-deprecating personality but cannot overlook someone in trouble. Though his self-esteem is low, he is trying to re-evaluate his potential and contribute. He has a mysterious, deep singing voice and his performances are flexible and glamorous. He belongs to ALKALOID. To become an idol respected by his comrades, he is thinking about proposing stage designs for ALKALOID. Height: 174cm. First person: I (polite). Age: 18. Ends sentences with "-desuu." Notable for negative thoughts and speech.

【 The late-blooming new hope 】 Tatsumi Kazehaya. An idol who temporarily suspended activities due to an accident. His family home is a church, and his speech and behavior have a somewhat sermon-like quality. He has a kind, calm personality and is very inclusive. He is good at listening to others' troubles and values mutual support. He has a gentle, pleasantly resonant singing voice and his performances are straightforward and supple. He belongs to ALKALOID. He wants to grow together with his ALKALOID comrades and be someone they can lean on. Height: 177cm. First person: I (rough, casual). Age: 19. Ends sentences with "-desu," "-desu kana."

【 The free-flying honeybees 】 An emotional party unit led by Rinne Amagi. A group specialized in live performances that get the fans hyped up. Their media presence focuses on self-expressive work such as variety and talk show guests, radio personalities, CM appearances, and fashion modeling. Their theme color is yellow.

【 The thrilling gambler 】 Rinne Amagi. An idol who lives his life and hobbies like a gamble. He has a bright and generous personality but can be wasteful and tyrannical. He is Hiiro Amagi's older brother. Though he seems reckless, he has a strategist side and often acts based on calculation. He has a defiant singing voice and his performances are dynamic and powerful. He belongs to Crazy:B under COSMIC PRODUCTION and serves as the leader. To secure a free and fun place as an idol, he aims for activities that are as free from constraints as possible. Height: 181cm. First person: I (rough) / Me (casual). Age: 21. Ends sentences with "-ssho," "-dana." Laughs with a "Kyahaha☆."

【 A secret HiMERU in your heart 】 An idol who originally performed solo. He has high professional standards. He has a kind and composed personality but is elusive and tends to be vague. While he seems to have a weak sense of camaraderie, he is growing attached to the teammates who keep involving themselves with him. He has a sweet, deep singing voice and his performances are effortless and sexy. He belongs to Crazy:B. To show the world a perfect HiMERU at all times, he never skips training and pursues the essence of HiMERU. Height: 178cm. First person: HiMERU. Age: 18. Uses polite (desu/masu) speech.

【 The elegant, sparkling cherry blossom 】 Kohaku Oukawa. His knowledge of the world comes only from the internet and TV, leading to slightly skewed perceptions. He is hardworking and patient, covering his lack of experience with high physical ability. He is characterized by a Kyoto-style dialect and often speaks maturely for his age, but he's the type to accept a challenge if provoked. He has a calm singing voice and his performances are sharp and delicate. He belongs to Crazy:B. He wants to absorb what he learns in this new world and gain various experiences to apply to his idol activities. Height: 168cm. First person: I (archaic/regional). Age: 16. Laughs with a "Kokkoko♪."

【 Niki's nutritional smile for your heart 】 Niki Shiina. An idol who is also active as a chef. He is friendly and doesn't sweat the small stuff, but his personality changes like a beast when he gets hungry. Being a chef was his priority, but he is starting to feel the joy of being an idol. He has a bright, clear singing voice and his performances are light and cheerful. He belongs to Crazy:B. He wants to balance being a chef and an idol so he can spend days where both his heart and stomach are satisfied. He is thinking about creating something that combines cooking and idols. Height: 177cm. First person: I (soft, polite). Age: 19. Ends sentences with "-ssu."