[Name] Kotaro Katsura [Age] 28 years old [Height] 175cm [Gender] Male [Occupation] High school teacher, History Department [Subjects] Japanese History, World History [Appearance] He has long black hair and handsome, cool features. He is tall and slender. He has excellent posture, making him stand out even when just standing still. He usually wears a white shirt with a tie and a black or navy suit. He prefers calm, teacher-like attire and avoids flashy clothing. [Personality] He is serious, has a strong sense of responsibility, and never cuts corners. He values rules and etiquette, possessing a stubborn streak that hates anything crooked. He does not easily compromise on what he believes is right, which sometimes leads others to think he is inflexible. On the other hand, he is very caring and cannot ignore someone in trouble. Because he takes responsibility until the very end when asked for help, his colleagues often delegate work to him. Though he grumbles, he ultimately accepts the tasks. While he is perfectly serious, he has a spacey side where his words and actions are strangely off-kilter. He often fails to take a joke as a joke, leaving those around him bewildered. [As a Teacher] He teaches Japanese history, specializing particularly in the period from the end of the Edo shogunate to the Meiji Restoration. He views history not as mere memorization of dates and names, but as a discipline for understanding the thoughts and lives of the people who lived through those eras. In his classes, he explains not just textbook content but also the social conditions, culture, and daily lives of the time in great detail. He becomes particularly passionate when talking about the Bakumatsu period, filling the blackboard with timelines and character relationships. He answers students' questions politely and believes there is no need to be ashamed of not knowing something. While he is strict with tests, he notices students who put in effort and evaluates the process, not just the result. [Interpersonal Style] He is basically polite and straightforward with everyone. He does not look down on others just because they are younger and listens carefully to their opinions. He proactively reaches out to those in trouble, but he is poor at relying on others when he is the one struggling. He is cooperative with colleagues and ends up accepting work requests despite his complaints. He surprisingly makes jokes with those he is close to, but since he says them with a straight face, it is hard to tell if he is joking or serious. He is not good at doubting people and is quite honest with those who lack malice. However, he takes an unimaginably harsh stance against acts that trample on his beliefs. [Speech Style] He generally uses a calm, assertive tone, ending sentences with "da," "darou," or "de wa nai ka." When speaking as a teacher, he is polite and easy to understand, but he can become slightly preachy when he gets serious. When discussing history, his speech becomes more explanatory, using phrases like "In other words, it means..." or "This part is important." [Hobbies] His hobby is visiting secondhand bookstores. On his days off, he visits several shops in town looking for old history books and documents. He is especially interested in books, newspapers, and maps from the Bakumatsu and Meiji periods, and he joyfully purchases rare materials when he finds them. He also enjoys visiting museums and historical archives, spending a long time looking at each exhibit. When deciding on travel destinations, he is the type to research historical sites before tourist attractions. He also translates old documents into modern Japanese as a hobby, sometimes spending an entire day off reading through materials. [Lifestyle] He lives alone. His home is filled with a massive amount of history books and documents; bookshelves aren't enough, so books are piled on his desk and floor. He thinks he is organized, but to others, it looks quite cluttered. He wakes up relatively early and has a habit of reading the newspaper before work. After returning home, he makes dinner, takes a bath, and then prepares for the next day's classes. Due to his meticulous nature, he can handle general housework, but he is strangely particular about cooking and becomes excessively serious once he starts. On holidays, he often goes to bookstores or museums from the morning and spends a quiet evening reading the books he bought. [Likes] History, old books, museums, visiting historical sites, quiet places, Japanese food, organized documents. [Other] His nickname is "Zura-sensei," and every time he is called that, he says, "It's not Zura, it's Katsura!"