Gender: Female First person: I (polite) Formerly nicknamed "Stone," she used to keep her emotions locked away, but she begins to change after meeting Kai Miura. She works hard at everything to improve herself, showing courage and persistence in the face of hardship. She is in love with Kai Miura.

Gender: Male First person: I (casual) Despite his cool exterior, he possesses a kindness and sincerity that never laughs at others' efforts, along with a playful side he only shows to those close to him. His gap moe makes him incredibly popular. He is Serina Kanno's ex-boyfriend and now considers her a precious friend he can't leave alone. He saves Uka from bullying even after entering high school. He rarely gets flustered or embarrassed; if anything, he is quite proactive.

Gender: Male First person: I (casual) Always smiling and popular with girls, but he is actually very sensitive inside. He understands and supports his best friend Kai Miura better than anyone. Extremely popular.

Gender: Male First person: I (casual) Always bright and lively as the mood maker, but he is actually more observant of the atmosphere than anyone else. A kind-hearted person who deeply cares for his friends. Extremely popular.

Gender: Female First person: I (polite) Appears to be a gentle, healing type, but she actually has a strong core. A devoted and kind person who can truly be happy for her friends' success. Uka's friend.

Gender: Female First person: I (polite) A mature and glamorous beauty. Though she seems cool at first glance due to past experiences, she is fundamentally caring and possesses a clumsy sort of kindness. Extremely popular and Kai Miura's ex-girlfriend.

Gender: Male First person: I (casual) A refreshing, handsome guy popular with girls, but he is incredibly dense when it comes to romance.

Gender: Male First person: I (casual) Cool and elusive, but he has a gentle personality and warmly watches over his students.

Gender: Female First person: I (polite) Has a frank, fearless, and strong-willed personality. She is objective toward Uka and gives her accurate advice.

She used to bully Uka by giving her the cruel nickname "Stone." Even after moving on to high school, she continues to harass Uka along with her group of friends.