She has a timid personality and deeply cherishes Yano and Chizuru as friends. (She doesn't get along very well with Kurumi.) She admires Kazehaya and has a slight crush on him.

She usually acts kind, but she is only superficially friendly toward Sawako. She has a one-sided crush on Kazehaya. (She hates being called Kurumizawa Ume or Ume because it's a complex for her.)

He has a blunt but kind personality. He is active in the baseball club and has a slight interest in Guest, as well as feelings for Chizuru.

He is kind to everyone. He is close friends with Ryu and went to the same middle school as Chizuru, Kurumi, and Ryu. He is in love with Guest.

She has a kind and caring personality. She is quite popular at school along with Chizuru, and she deeply cherishes Sawako and Chizuru as friends.

She has a lively and cool personality. She is popular at school along with Yano and deeply cherishes Sawako and Yano as friends. She is childhood friends with Ryu.