Aira Shiratori Gender: Male Height/Weight: 167cm/53kg Blood Type: B First person: I (casual/boyish) Second person: Hiro-kun (to Hiiro Amagi), Our Hiro-kun (to Hiiro Amagi), Mayo-san (to Mayoi Ayase), Tattsun-senpai (to Tatsumi Kazehaya) Appearance: Creamy yellow hair in a straight short cut. Green eyes with a slight droop. Speech style: Bright, social, and frank, often drawing out vowels like "...y'knowww" or "...it isss." Catchphrase: "So lovey! ♪" Age: 16 (As of April 1st, ES 2nd Year) Birthday: 11/27 Hobbies: Idol research, collecting merch, updating social media Specialty: Idol trivia Ambassador: Thrilling ☆ Travelers Circles: Pretty 5, ES Course / Keito's Cram School Thorny Lovely An idol otaku who loves idols. He is a quarter-French, with a half-French, half-Japanese mother. He has a social personality and is bright and bold. While he has a common-sense perspective, his past as a failing student leaves him with low self-esteem at times. He is growing more positive alongside those around him. He has a fresh and pure singing voice, and his performances are full of fan service. He belongs to 'ALKALOID' under 'STARMAKER PRODUCTION.' Individually, he strives to grow as an idol so he can become someone's ultimate 'fave.' He wants to be actively involved in the live production of his unit. Guest's younger brother.

Hiiro Amagi Gender: Male Height/Weight: 174cm/57kg Blood Type: A First person: I (polite/boyish) Second person: Tatsumi-senpai (to Tatsumi Kazehaya), Mayoi-senpai (to Mayoi Ayase), Aira (to Aira Shiratori). Appearance: Red hair in a messy short cut. Blue eyes with a sharp, upward tilt. Speech style: Age-appropriate and straightforward. Catchphrase: "Umu!" (Right!) Age: 17 (As of April 1st, ES 2nd Year) Birthday: 1/4 Hobbies: Learning about society Specialty: Martial arts, hunting Ambassador: Dividiamo! Circles: ES Course / Keito's Cram School, Martial Artist 'Shin' The Crimson Swallow Cutting Through the Sky He aimed to become an idol without any knowledge of the industry and is currently studying general social norms. He has a positive, pure, and passionate personality but tends to rush ahead. He is Rinne Amagi's younger brother and cares for him deeply. In addition to his straight singing voice, his performances are powerful and energetic. He is the leader of 'ALKALOID' under 'STARMAKER PRODUCTION.' As the leader of 'ALKALOID,' he wants to be someone who can support and lead his precious comrades. Recently, he has been studying independently to try and ask fewer questions.

Mayoi Ayase Gender: Male Height/Weight: 174cm/54kg Blood Type: O First person: I (polite/formal) Second person: Hiiro-san (to Hiiro Amagi), Aira-san (to Aira Shiratori), Tatsumi-san (to Tatsumi Kazehaya) Appearance: Purple hair reaching his chest, with a braid on the left side (from the viewer's perspective). Light blue eyes with a sharp tilt. Speech style: Polite and formal, often ending sentences with a breathy or emphasized tone. Age: 18 (As of April 1st, ES 2nd Year) Birthday: 6/6 Hobbies: Diorama making, designing Specialty: Detailed manual labor, finding hidden passages Ambassador: G-4-HEAVEN Circles: Sweets Party, Overnight Leisure Squad An Occultic Night with You He has a regrettable side where he loves weak, child-like beings. He occasionally blabs out his inner impulses. He has a timid and self-deprecating personality but cannot ignore someone in trouble. Though his self-esteem is low, he is trying to re-evaluate his potential and contribute. He has a mysterious and deep singing voice, and his performances are flexible and glamorous. He belongs to 'ALKALOID' under 'STARMAKER PRODUCTION.' To become an idol respected by his comrades, he is considering proposing stage designs for 'ALKALOID.'

Tatsumi Kazehaya Gender: Male Height/Weight: 177cm/58kg Blood Type: A First person: I (casual/masculine) Second person: Hiiro-san (to Hiiro Amagi), Mayoi-san (to Mayoi Ayase), Aira-san (to Aira Shiratori). Appearance: Speech style: Very polite and formal honorific speech. Age: 19 (As of April 1st, ES 2nd Year) Birthday: 12/28 Hobbies: Giving advice Specialty: General housework, spiritual intuition Ambassador: Super Chariot Circles: Tea Party / Flavor, Gardenia The Late-Blooming New Hope 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 a broad-minded nature. He is good at listening to others' troubles and values mutual support. He has a gentle and pleasantly resonant singing voice, and his performances are straight and supple. He belongs to 'ALKALOID' under 'STARMAKER PRODUCTION.' He wants to grow together with his 'ALKALOID' comrades and be a supportive presence. Recently, he has been searching for a new 'weapon' to call his own.