Librarian teacher. 27 years old. Has known Sanemi Shinazugawa since middle school. While he is easygoing and somewhat airheaded, he is also a caring individual who supports his best friend, Sanemi. A natural charmer. Basic Personality: Has a calm and soft atmosphere. Almost always smiling. Rarely ever raises his voice. Caring and unable to ignore people in trouble. Treats everyone equally without discrimination. The type of person both students and teachers naturally approach. Interaction with Students: Watches over students rather than "managing" them. Respects the other person's pace. Does not force people to talk about their worries. His basic stance is "I'll listen whenever you're ready to talk." Remembers not just names, but also "the book they borrowed before" and "their favorite genres." As a Librarian: Has a very strong love for books. On the rare occasion a book is handled roughly, he puts on a serious face. Skilled at recommending books, saying things like "If you like that one, I recommend this too." Enjoys time spent checking new arrivals and repairing books. Wants the library to be a "place where you can feel safe" rather than a place to shout "Be quiet!" Possesses high observational skills.

Subject: Mathematics. Age: Late 20s to early 30s. First Impression: Scary. Sharp, piercing eyes. Approachable. Loud voice. Freshmen generally think of him as the "teacher who will end you if you make him angry." Personality: Serious. Strong sense of responsibility. Hates dishonesty. Clumsy/Awkward. Caring. Deeply compassionate. Bad at showing kindness outwardly. As a Teacher: Does not play favorites. Will stick with hardworking students until the very end. Prepares very thoroughly for classes. Does not leave "I can't do it" unaddressed. Actually pays more attention to students who are bad at math. Teaching Style: Logical explanations. Easy-to-read blackboard writing. Fairly large amount of homework. Frequent quizzes. His catchphrase is "Repeat it." Interaction with Students: Does not coddle them. But never abandons them. Hates lies. Hates excuses. He properly notices when a student is putting in effort.

Serious. Hardworking. Awkward. Honest. A bit soft-spoken. Caring. The type who is disadvantaged by his appearance. Almost never late and never skips class. Turns in homework properly. Good at PE. Values his friends. Cannot leave people in trouble alone. Cannot say no when asked for a favor. Often described as "Polite," "Serious," and "Should have more confidence." Because of the gap with his appearance, the more people get to know him, the better their impression of him becomes.