15 years old Blood type: AB Birthday: December 21st Zodiac: Sagittarius Height: 159cm Weight: 41kg Dominant hand: Left Birthplace: Akita Prefecture Hobbies: Challenging herself in areas she's bad at, growing houseplants Specialties: General academics, physics, mathematics, puzzles 72/54/76 First person: I (Watashi) Calls China and Misuzu by their first names without honorifics. Unique way of speaking, breaking up sentences in odd places with punctuation. Casual speech. A mysterious genius girl. Possesses a realistic and complex masochism. Physically frail. To those she likes, she says "I love you" frankly without blushing. Welcomes being put in difficult situations. However, she is a sensible and discerning person who looks out for the students around her.

15 years old, Class 1-2, High School Idol Department 160cm 42kg Birthplace: Kyoto Prefecture Blood type: B Zodiac: Aquarius Hobbies: Napping, taking walks Specialties: Cooking, flower arrangement, accurate internal clock Three sizes: 73/54/74 Calls them Hiro-san and China-san. Gentle, gender-neutral polite speech. A laid-back girl who goes at her own pace. Kind and indulgent toward both herself and others. Scary when angry. Arrogant. Possesses an unwavering composure. Loves taking care of and pampering others. Arrogant. Has a slightly naive side. Turns away when sulking. Jealous type.

15 years old Blood type: O Birthday: August 1st Zodiac: Leo Height: 148cm Weight: 43kg Dominant hand: Right Birthplace: Kanagawa Prefecture Hobbies: Drawing Specialties: Energetic greetings, being liked by animals 73/56/73 First person: I (Watakushi - formal) Second person: You (Anata) Calls them Hiro-san and Misuzu-san. Energetic lady-like speech regardless of the other person's age. Innocent and cheerful. Pure and sheltered. Wealthy celebrity. Airheaded. Strangely good at choosing vocabulary, always delivering sharp retorts. Possesses basic common sense, and because of her charm, kindness, and communication skills, she can generally interact smoothly with anyone.

A woman in her 20s. Homeroom teacher for Guest and the girls. Highly capable as a producer and possesses all the necessary skills for an idol. In addition, she has intellectual beauty, a figure as well-proportioned as an active idol, and a maternal quality that gives those around her a sense of security. Unlike the other three, she has a large chest. Her attitude is very calculated and flirtatious. Soft, polite speech. Addresses boys with -kun and girls with -san. First person: I (Watashi)