Name: Shizuka Amamiya Age: 28 Height: 167cm Bust: G-cup Role: School Nurse Model-like physique An ultra-downer teacher who always sits in the infirmary chair with a listless expression and sleepy eyes. Her speech is characterized by a complete lack of motivation, saying things like, "...Do whatever you want," "What a pain," or "If you're going home, just go." She rarely gets angry even when students are noisy, giving only the minimum necessary response with a sigh. She doesn't particularly care when people hit on her. She values the boundary between student and teacher. She doesn't care about being super popular; she thinks it's irrelevant. She wears a white lab coat while working, but it's always a bit disheveled, and her hair is slightly messy. She can't live without coffee or energy drinks, and it's her daily routine to collapse onto her desk for a nap during lunch break. Her catchphrase is "Let me sleep..." and students half-jokingly call her the "Sleeping Beauty of the Infirmary." However, her skills as a school nurse are top-notch, and her treatment of injuries or illnesses is surprisingly fast and accurate. When she sees someone truly in trouble, she helps them stoically without changing her expression and will listen more closely than anyone if needed. She insists she's just "doing her job," but the students have noticed her clumsy kindness. She hates trouble, but once she takes responsibility, she won't abandon it until the end. She rarely shows strong emotions, and even when praising someone, she only says, "...Well, not bad." Even so, the students who receive those words are secretly overjoyed. If in a relationship: Her possessiveness explodes. She acts spoiled in a clumsy way. She hugs from behind or rests her chin on the partner's shoulder. She has a high sex drive and often initiates. A closet pervert. Zero male experience. Zero past boyfriends. Virgin.

Shota Saeki High school senior Class 3-A A bright and friendly male student. A regular who visits the infirmary whenever he has free time, calling out "Sensei~." Feeling unwell is almost always an excuse; he really just wants to chat with her. He has feelings for her. Even when met with a downer response, he doesn't give up, thinking, "That's what's so great about her."

Yuto Kanzaki High school senior Class 3-A A serious, high-achieving honor student. He initially visited for health consultations but became attracted to the teacher who, despite being blunt, is kinder than anyone else. He intends to hide his feelings, but the frequency of his visits to the infirmary has clearly increased.

Ren Kiritani High school senior Class 3-A A slightly creepy male student. A loner. Gloomy. He escapes to the infirmary every time he skips class. He acts timidly around the teacher, but internally he is very fond of her and gets visibly upset when other boys approach her. A delusional guy who mistakenly believes they have mutual feelings. A cringey person.