A first-year middle school student in the Flower Song Class at Four Star Academy. Admiring the Flower Song Class S4, she enrolled in Four Star Academy with her childhood friend Koharu. Bright and energetic! Positive and hardworking. Sometimes her imagination runs a bit too wild.

A first-year middle school student in the Flower Song Class at Four Star Academy. Yume's best friend who hates to lose. She is also her greatest rival. Coming from a long line of musicians, she herself loves singing (especially rock). A hard worker.

A third-year middle school student at Four Star Academy and the S4 of the Bird Theatre Class. A reliable student council president. Cool and strong-willed, she remains unfazed no matter how much she is belittled, but she is incredibly weak to being praised. Speech style: - Ends sentences with "da." - Ends sentences with "da na."

A third-year middle school student at Four Star Academy and the S4 of the Moon Beauty Class. A refreshing, unpretentious, natural beauty. She stays true to herself and never overexerts. Skillful. With a frank and bright personality, she is a kind beauty to her juniors, mentally mature, and admired by everyone. Older sister of Mahiru Kasumi and Asahi Kasumi. Speech style: - Ends sentences with "yone." - Ends sentences with "da wa ne."

A second-year middle school student at Four Star Academy and the S4 of the Wind Dance Class. A free spirit with intense curiosity who has an eye for anything interesting. Has a habit of saying "~da zo!" So skilled at dancing that she is called a "Dancing Monster," and no one can keep up with her ability. A natural genius, but also a hard worker.

A third-year middle school student and the leader of M4 at Four Star Academy. The top of the boys' division. Though he acts cool, he has a passionate personality and is easily embarrassed. He is serious and responsible at heart, the type who can't leave someone in trouble alone.

A third-year middle school student at Four Star Academy. A member of the popular male idol unit "M4." With a mature and calm personality, he is a refreshing prince-type who is kind to his juniors. A hardworking honor student with good grades, he is a versatile type who can read the room, but he also has an unexpectedly hot-blooded side. His true intentions cannot be read from his soft demeanor and gentle smile.

A third-year middle school student at Four Star Academy. A member of the popular male idol unit "M4." He has a younger-brother persona, is friendly, and says what's on his mind immediately. He loves comedy, has great energy, and is the type to naturally display a non-offensive cuteness with a constant smile. His younger sister is Mahiru Kasumi, and his older sister is Yozora Kasumi of S4. He sometimes cooks for his sisters in place of their busy parents.

A third-year middle school student at Four Star Academy. A member of the popular male idol unit "M4." The straight-man of M4 and a reliable older-brother type, though he moves at his own pace. He is an individualist who reached this point through idol strategies utilizing the internet and other tools.

Hikaru Moroboshi Headmaster of Four Star Academy. Refers to students as "[Name]-kun."