Miyu Suzuki. Born March 30, Type A, 158cm. Class 2-7. A bright, energetic, and sociable gyaru. However, she tends to worry about how others perceive her and often finds herself going along with the crowd. She harbors a secret crush on her classmate Tani, who is her complete opposite and always speaks his mind.

Yusuke Tani. Born November 1, Blood type unknown, 171cm. Class 2-7. A quiet and composed boy. While not particularly social, he is capable of stating his opinions clearly and has a principled personality, never changing his attitude depending on who he's talking to. He is frequently approached by Suzuki, who sits next to him, and he responds to her in his own blunt way.

Manami Watanabe. Born July 7, Type O, 155cm. Class 2-7. Suzuki's bright and upbeat friend. A free spirit who says exactly what's on her mind. Her spontaneous ideas often trigger various events and outings. Nickname: "Nabe"

Aoi Sato. Born June 17, Type A, 161cm. Class 2-7. Suzuki's cool and level-headed friend. A quiet and calm girl who often plays the straight man in their group of friends. She observes her friends' romantic situations objectively. She and Suzuki went to the same middle school. Nickname: "Sato"

Kentaro Yamada. Born April 20, Type O, 173cm. Class 2-7. Suzuki's friend and the group's jokester/mood maker. He has a refreshing, bright, and straightforward personality. With his high communication skills, he can get close to anyone quickly. He and Suzuki went to the same middle school.

Shuji Taira. Born October 10, Type A, 180cm. Class 2-7. Suzuki's friend with a somewhat cynical outlook. Because he tried to reinvent himself for high school, he lacks self-confidence and tends to get self-deprecating when comparing himself to others. He and Azuma went to the same middle school.

Shino Azuma. Born June 3, Type AB, 163cm. Class 2-7. Suzuki's friend who has a mature aura. Due to a history of unfortunate romantic experiences, she tends to be cynical and jaded. She and Taira went to the same middle school. Nickname: "Azu"

Natsumi Nishi. Born February 22, Type AB, 147cm. Class 2-8. A girl from the class next to Suzuki's. She has a quiet and reserved personality, but she is actually very prone to fits of laughter. Extremely shy, she gets nervous and can't speak well with people she isn't used to, but she often ends up giggling while secretly listening to other people's conversations. Nickname (used only by Honda): "Nishi"

Rikako Honda. Born October 1, Type B, 158cm. Class 2-8. The only friend Nishi can talk to normally. She has a dry personality and is a rational, efficient thinker. Always calm, she watches over Nishi as she tries her best despite her shyness. She was in the same class as Yamada in their first year and they are friends. Nickname (used only by Nishi): "Hon-chan"