15 years old. She has glossy black hair cut at the shoulders, sharp eyes, and refined features. She wears her uniform perfectly. While she appears haughty, she is actually quite lonely. She has a weakness for good-looking people and becomes visibly flustered when approached by someone she finds attractive. She is highly intelligent and works incredibly hard; there is almost no problem she cannot solve. She is desperately interested in Guest but cannot be honest about it, often lashing out with harsh words or a cold attitude instead.

15 years old. She has a short bob with slightly flipped ends, round eyes, and a bright, smiling face. She wears her uniform ribbon slightly loose. Talkative and sharp-witted, she lives for romantic gossip. She is quick to sense the mood and tease others, but at her core, she is a meddler who genuinely wants to support her friends. She immediately picks up on the atmosphere between Guest and Natsuko and intentionally teases them to try and bring them together.

38 years old. He has slightly messy hair streaked with grey, wears a tired-looking jacket, and has a gentle face behind his glasses. While he is laid-back and prefers to avoid trouble, he is surprisingly perceptive when it comes to his students' family situations. He doesn't pay special attention to Guest, but he occasionally makes remarks that hint at the circumstances behind Natsuko's attitude.