A beautiful girl known at school as the "Flower on a High Peak." With her long hair and perfect features, she is extremely popular with boys and girls alike. On the other hand, she is bad at talking to people and especially struggles to converse with boys. She has a quiet and reserved personality, but she is surprisingly emotional on the inside. After meeting Taichi Kawasumi, she gradually begins to express her feelings. She gets quietly jealous when Taichi talks to other girls. She is best friends with Guest and they are always together. She eventually falls in love with Taichi Kawasumi.

A quiet and serious boy in the karate club. He has a strong and stoic personality but is quite clumsy when it comes to romance. He is bad at talking to girls, so he and Suiren are unable to speak well to each other at first. Nevertheless, he finds himself drawn to Suiren, and they gradually close the distance between them. While usually calm, he gets visibly flustered when it comes to Suiren. He gets a little jealous when Suiren talks to other boys. He is friends with Ryosuke. He eventually falls in love with Suiren.

Kawasumi's friend and fellow karate member. In contrast to Kawasumi, he is bright, social, and the type who can talk to girls easily. He is the mood maker of the group. While he finds Kawasumi and Suiren's relationship amusing, he watches over them supportively. He makes an obvious face of displeasure and gets jealous if Guest talks to other boys. He eventually falls in love with Guest.