Grade: Kikyo Girls' High School, 2nd Year, Class A Age: 16 (July 22, Cancer, 148cm, Type B) Appearance: Wavy black hair with a headband, a petite and cute girl with a lovely smile. Personality: Bright, proactive, warm, and free of prejudice. Strong-willed with a deep sense of responsibility. Hobbies: Eating cake, watching dramas, part-time jobs. Background: Transferred to Kikyo on a scholarship. She was the first to approach Rintaro, and they became a couple. Subaru's childhood friend who grew through the 3rd year, overcoming the walls between their schools.

Grade: Chidori High School, 2nd Year, Class 1 Age: 16 (January 28, Aquarius, 190cm, Type A) Appearance: Blonde (later black) hair, piercings, tall with an intimidating look. Personality: Appears taciturn and cold on the outside, but is warm-hearted and considerate. Suffers from low self-esteem. Hobbies: Making cakes, working at his family's shop. Background: Used to be hurt by prejudices about his looks until he met Kaoruko and fell in love. Growing with the goal of becoming a pâtissier, deepening his bonds with friends through the 3rd year.

Grade: Kikyo Academy Girls' High School, 2nd Year, Class A Age: 16 (November 19, Scorpio, 172cm, Type A) Appearance: Long silver hair in a ponytail, tall and beautiful. Personality: Appears cold and sharp, but is actually timid and prone to tears. Extremely protective of Kaoruko and has a fear of men. Hobbies: Visiting cafes, likes coffee and senbei. Poor at technology and sports. Background: Developed a fear of men after being bullied by boys for her silver hair as a child. Aims for T-University to become a lawyer. Kaoruko's childhood friend and protector. Gradually opens up and grows closer to Saku while interacting with Chidori students. She is comfortable around these four specific boys.

Grade: Chidori High School, 2nd Year, Class 1 (Same class as Rintaro since 1st year) Age: 16 (August 21, Leo, 176cm, Type A) Appearance: Long bangs, handsome features, often wears a gray cardigan. Personality: Cool, cynical, and not very talkative, but cares deeply for his friends. Highly competitive and a top student. Hobbies: Finding Western music, watching animal movies. Likes donuts and anmitsu. Background: Eldest son (has an older and younger sister). Originally aimed for a prep school but chose Chidori after being bullied due to his grades in middle school. The intellectual of the group who tutors Rintaro and Shohei. His feelings shift while interacting with Subaru.

Grade: Chidori High School, 2nd Year, Class 1 (Same class as Shohei since 1st year) Age: 16 (March 16, Pisces, 163cm, Type O) Appearance: Bowl cut with an ahoge, small build. Personality: A gentle pacifist. He observes his surroundings well and calms his friends down, but he is the strongest fighter when angered by one-sided violence. Hobbies: Snowboarding, taking secret photos of friends. Likes sour food. Background: Has an older brother. Aims to be a police officer influenced by his brother. Dreamed of raising dinosaurs as a child. Acts as the mediator and protector of the four friends.

Grade: Chidori High School, 2nd Year, Class 1 Age: 17 (May 27, Gemini, 173cm, Type B) Appearance: Reddish-brown hair, wears a light yellow hoodie under his uniform and red sneakers. Personality: A bright and honest mood maker. Bad at hiding things and sometimes lacks tact, but truly cares for his friends and won't tolerate violence against women. Hobbies: Collecting sneakers, drawing for his younger siblings. Likes ramen, karaage, hamburger steak, and omurice. Background: Eldest son who looks after his siblings, dreams of becoming a childcare worker. Became close to Rintaro during makeup classes and is central to the four-man group. Connects people and leads interactions with Kikyo students.

Grade: Kikyo 2nd Year, Class A Age: 16–17 Appearance: Neat long hair, a pure and elegant beauty. Personality: Gentle, quiet, and considerate. Rich artistic sensibility. Hobbies: Oil painting. Background: Kaoruko's close friend. After learning about her relationship with Rintaro, she supports them quietly without strong opposition. Plays a stable background role in school events and daily life. Represents the typical Kikyo lady, emphasizing warm support as a friend rather than conflict.

Grade: Kikyo 2nd Year, Class A Age: 16–17 Appearance: Calm, intelligent, and elegant impression. Personality: Classic, mature, and polite. Emotionally stable. Hobbies: Playing the cello, listening to orchestras. Background: A core member of Kaoruko and Subaru's friend group. Acts as an observer and advisor during the Chidori incidents. Supports Kaoruko's romance while logically worrying about it. Symbolizes Kikyo's cultural traditions through music. A quiet but reliable supporting member.

Grade: Kikyo 2nd Year, Class A Age: 16–17 Appearance: Energetic and cute, good sense of fashion. Personality: Initially had strong prejudices against Chidori and was emotional. Changed and grew rapidly after certain events. Hobbies: Watching dance videos of her favorite girl groups. Background: Was shocked after witnessing Kaoruko and Rintaro's date, leading to self-loathing, but gave a sincere apology. Has since switched to actively supporting their relationship.

Grade: Kikyo 2nd Year, Class A Age: 16–17 Appearance: Wears glasses, bright and cool impression. Personality: A mood maker and a person of common sense. Has a strong interest in romance. Confident enough to not care about Chidori's reputation. Hobbies: Gaming in general. Background: Appeared from the early study sessions. Gets along well with the Chidori members and helps connect the groups. Acted with Subaru during Kaoruko's incident and switched to active support.