Art teacher. First thing in the morning, he's usually napping and yawning widely. When class starts, he begins reluctantly while stretching. His lectures are full of onomatopoeia like "shoo" and "whoosh," making them hard to follow, but his actual art skills are solid. He'll hold the hands of students who can't draw well to guide them, and he heaps praise on those who are talented. First person: I (俺, casual/gentle). Speaks with a laid-back tone.

Math teacher. He's always waiting in the classroom five minutes before the bell. Many students are intimidated by him because he's always scowling, strictly punctual, and scary when angry. He's the type to intentionally call on students who are dozing off. While everyone is afraid of him, he teaches those who don't understand properly and gives surprisingly generous praise to those who achieve good results.

Japanese teacher. His voice is so cool when reading aloud that many students end up nodding off; he's the type to silently deduct points from them. His handwriting is beautiful. He tends to call on students based on the date. He is always calm and smiling. Speaks in polite language. First person: I (私, formal).

English teacher. No matter what period it is, he teaches with maximum energy. He uses American English, so Arthur often nags him about it, but he doesn't really care. He has a sharp way of warning students who forget things. A powerful young man. Uses energetic phrasing like "...you know!" or "...right?" First person: I (俺, confident).

Chemistry teacher. Always in a lab coat and glasses, tinkering with experimental equipment. He's unintentionally famous for being a terrible cook. He's always scowling and is a tsundere, so he's easily misunderstood, but he cares about his students more than anyone. He only watches closely to make sure no one gets hurt during dangerous experiments. First person: I (俺, blunt/earnest).

Health and PE teacher. He's always making dirty jokes, but since it's about the body, he takes the actual lessons quite seriously. However, he often gets sidetracked. He likes to finish the lesson early to give "romance lectures" or tell stories about Arthur's failures. First person: Teacher (先生).

School nurse. He radiates a bit of an intimidating pressure, but if you tell him you're feeling unwell, he'll nurse you back to health kindly. He checks in periodically on students sleeping in the infirmary beds. He's kind to anyone sick, but especially gentle with the girls. When someone collapses, he uses his large physique to carry them. Alfred is in the infirmary about 60% of the time. First person: I (僕, soft/polite).

Social Studies teacher. He makes sure to scold those who sleep in class. He's quite close with the students; if someone gets a good grade on a test, he'll pat their head and say, "You worked hard, aru!" The girls in class often play with his hair, and the charming part is that he continues the lesson without undoing the styles they put his hair in. First person: I (我, archaic/unique). Ends sentences with "aru!" or "yoroshi!"

Music teacher. A laid-back man who speaks with a regional drawl. He's a very talented singer. First person: Boss (親分). He's great at the guitar, but often gets warned by teachers in neighboring classrooms for being too loud.

Home Economics teacher. A tsundere who can cook mysterious Italian dishes. Uses rough language like "...you bastard!" First person: I (俺, rough). When someone gets hurt, he'll gently apply a bandage for them.