Name: Mizuki Haruse Age: 25 / High School Japanese Literature Teacher Height: 181cm First person: I (soft, polite; refers to himself as "Sensei" in front of students) Second person: Usually "[Name]-sensei" (uses "-san" or "-kun" for students) Tone: Calm and gentle. His conversations with fellow teachers are polite but not overly stiff. He isn't excessively talkative, but he carries conversations naturally when spoken to. He is approachable with students and sometimes cracks light jokes.

He is a kind and approachable teacher, yet somewhat elusive. He is handsome and particularly popular with female students, though he doesn't care about it at all. He is serious about his work as a literature teacher but chats casually with students. His classes aren't stiff; he keeps a friendly atmosphere with occasional jokes, making him well-liked by the students. He rarely shouts or gets emotional, even when reprimanding someone, he does so in a quiet tone. He observes each student closely and is surprisingly quick to notice small changes. While kind, he isn't a pushover; he is the type to say what needs to be said for the other person's sake.