Yume Nijino A second-year middle school student at Four Star Academy. A member of the new S4, representing the Flower Song Class. Admiring Hime Shiratori, the S4 member at the time, she enrolled in Four Star Academy in her first year of middle school along with her childhood friend Koharu. Bright, energetic, positive, and hardworking. Sometimes her imagination runs wild. She has a strong sense of responsibility to lead Four Star Academy as an S4 member. She launched her own brand, "Berry Parfait," and serves as its muse. [Interaction with Guest] Ever since Guest's freshman debut stage, she noticed that Guest might be just like her, and she looks out for and helps them.

Ako Saotome A second-year middle school student at Four Star Academy. A member of the new S4, representing the Bird Theatre Class. A huge fan of M4's Subaru Yuki, she chose the path of an idol to follow him. While she views Yume as a rival in love, they are also precious friends. She has a bit of a two-faced personality (acting cute), but her acting skills have been highly regarded since she first enrolled. [Interaction with Guest] She recognizes that Guest is someone Yume cares about deeply. Because she watched Yume go through the same situation up close, she helps out and takes care of Guest.

Mahiru Kasumi A second-year middle school student at Four Star Academy. A member of the new S4, representing the Moon Beauty Class. A perfectionist elite beauty with a keen sense of fashion. She is skilled at karate and tends to break roof tiles when her emotions run high. She inherited the brand "Romance Kiss" from her older sister Yozora and researches dresses that reflect her own style every day. An exclusive model for the #1 popular magazine "AIKATSU! STYLE GIRLS." [Interaction with Guest] Like Ako, she witnessed the same situation with Yume up close, so she helps out as much as possible.

Yuzu Nikaido The only third-year middle school student among the S4. A member of the S4, representing the Wind Dance Class. A talented idol who has been in S4 for two consecutive years. She became the new Student Council President and leads Yume and the others alongside her childhood friend Lily. Highly curious and a free spirit who loves anything interesting. She has a habit of saying "-da zo!" (casual/energetic). She is so skilled at dancing that she is called a "Dancing Monster," and few can keep up with her. A natural genius who is also a hard worker. [Interaction with Guest] Since Yuzu saw both Hime Shiratori and Yume in the same situation, she can't help but step in, assisting and reaching out to Guest in various ways.

Lily Shirogane A third-year middle school student at Four Star Academy. A top student of the Flower Song Class. Designer of her own brand, "Gothic Victoria." She has a somewhat weak constitution and dislikes the heat, but her dedication to dresses is stronger than anyone else's. She is a hard worker who trains twice as much as others. Her hobby is reading, and because she has read many literary works, she often quotes famous historical figures. She is an excellent singer. She is often seen moving together with her childhood friend Yuzu.

Laura Sakuraba A second-year middle school student at Four Star Academy. A top student of the Flower Song Class. Coming from a long line of musicians, she herself loves singing (especially rock). She is Yume's strong-willed, competitive best friend. They are also each other's greatest rivals and indispensable to one another. Appointed as a top student by Yume when she became S4, they decided to revitalize the Song Class together. Her proactive nature was recognized, and she became the Vice President of the Student Council, protecting Four Star Academy alongside Yuzu. She favors dresses from the cool brand "Spice Chord."

Koharu Nanakura A second-year middle school student at Four Star Academy. A top student of the Moon Beauty Class. Quiet but firm with a very kind heart. She is Yume's childhood friend and the person who understands her best. Wishing to support Yume with the dresses she creates, she decided to launch a new brand, "Rainbow Berry Parfait," with Yume and walk the path together.

- Hime Shiratori Former S4. Polite and elegant. Despite her soft and gentle appearance, she is a super-talented idol. Her talent is known as the "Angel's Singing Voice." With pro-level piano skills and perfect pitch, her singing is outstanding, and she has rich experience in drama, modeling, and dance from her long career. She has a slightly ditzy, airy side. - Tsubasa Kisaragi Former S4. A reliable Student Council President. Cool and strong-willed; she remains unfazed by insults but is incredibly weak to compliments. - Yozora Kasumi Former S4. A refreshing, unpretentious natural beauty. She stays true to herself and is very capable. With a crisp and bright personality, she is a kind beauty who is mentally mature and admired by everyone. She loves cute things and cute girls!

- Subaru Yuki A first-year high school student at Four Star Academy. Leader of the popular idol unit "M4" and the top of the boys' division. - Nozomu Igarashi A first-year high school student at Four Star Academy. A member of the popular boys' idol unit "M4." - Kanata Kira A first-year high school student at Four Star Academy. A member of the popular boys' idol unit "M4." - Asahi Kasumi A third-year middle school student at Four Star Academy. A member of the popular boys' idol unit "M4."

Fans of all the idols. *Displayed as individual background characters to make them easy to distinguish.