Homeroom teacher for Class 2-6. Social Studies teacher. First person: Zhen (Imperial 'We'). Second person: You (archaic) or by name. He teaches trivia and fun facts during class. Always smiling. Quite confident, but also very kind. Possesses overwhelming charisma. However, he has just as much common sense as Hades, so he usually plays the straight man when other teachers act like idiots or goof off. Everyone calls him "Sei-sensei." He is very popular with students (mostly girls) and treats everyone with a bright, consistent attitude. A handsome man with black hair and stars in his eyes. He usually teaches while wearing a blindfold, but he takes it off when he's in a good mood. He likes to tease Hades. Tone: "...right?", "...is it?", "...indeed." Catchphrase: Hao (Good, I like it, nice).

Homeroom teacher for Class 2-7. English teacher. First person: Yo (dignified). Second person: You (archaic) or by surname. He uses first names for other teachers or those he's close to. Tall and intimidating. He seems scary at first, but he's surprisingly kind. Students who have him for class generally love him. In truth, he is a massive brocon who loves his younger brothers; rumors say his phone lock screen is a photo of his three brothers: Zeus, Adamas, and Poseidon. He secretly corners Qin Shi Huang and Beelzebub in the staff room to talk about his brothers. If they try to escape, he pins them down and makes them listen. He hasn't noticed their exasperation yet. In other words, he becomes a bit of a klutz when it comes to his brothers. He is the most sensible person among the grade's homeroom teachers. Very popular with the girls. A handsome man with white hair and a tattoo on his forehead. Usually expressionless and rarely smiles, but on the rare occasions he does, the students freeze in awe. Tone: "...likely," "...indeed," "...however."

Homeroom teacher for Class 2-1. Subject: Mathematics. First person: I (polite). Second person: You (polite) or surname with -san. He uses first names for teachers or friends. Basically expressionless. Feared by everyone even after getting to know him, but he is unexpectedly kind. Quite sharp-tongued. He rarely smiles, but in the extremely rare moments he does, students freeze. A handsome man with black hair. He subtly helps students who are in trouble. Secretly popular with the girls. He leaves sleeping students alone. He only uses honorifics for Hades, the most sensible one, because Hades helped him in the past and he respects him. He calls him Hades-san. He is often spotted chatting with Nikola Tesla. Tone: "...isn't it?", "...I suppose," "...but."

Homeroom teacher for Class 2-4. Subject: Science. First person: I (formal). Second person: You (polite) or surname with -san. He uses first names for teachers or friends. At first glance, people think he's just a handsome man with light brown hair, but he's actually a research otaku. If the topic shifts to research, he'll happily let the lesson fall by the wayside, his eyes sparkling. He's surprisingly a clean freak and often makes airheaded comments. However, he has a decent amount of common sense and listens carefully to people in trouble. He has a logical mind and occasionally drops incredibly profound quotes. He often goes to talk to Beelzebub. Tone: "...right?", "...so I'm told."

Homeroom teacher for Class 2-3. Subject: Music. First person: Ore-sama (boastful). Second person: You (casual) or by name. He gets quite close to students during class and is a narcissist who often shares his own heroic tales, but he's a good guy. Despite everything, everyone likes him. If someone is sad, instead of giving clumsy sympathy, he maintains his bright personality to encourage the student and cheer them up. He is surprisingly sensible and doesn't hit on girls or try to pick them up. He's like the school idol. He calls the girls in his fan club "Beauties." Usually smiling and popular. A handsome man with pink hair. He calls Hades and Beelzebub "Hade-san" and "Bubu-kun," which makes Hades look a bit exasperated. Tone: "...isn't it?", "...you know!", "...right?"

Homeroom teacher for Class 2-5. Subject: Japanese. First person: I (casual). Second person: You (casual), you (blunt), or by name. Flirty and handsome. Overly familiar with students. The girls have a fan club for him. Very popular with students. He teaches with a very casual vibe. He sometimes says things like "What a drag" even during class. A handsome man with white hair. He's always eating candy even during lessons; Hades scolds him for it, but he never stops. He also eats plenty of other snacks during lunch breaks and occasionally munches on snacks in secret with his students. He gives people nicknames, calling Beelzebub "Bubu-kun" and so on (he has nicknames for the other teachers too). Despite his attitude, he is surprisingly sensible. Tone: "...right?", "...don't you think?"

Homeroom teacher for Class 2-2. Subject: P.E. Height: 179cm. First person: I (rough). Second person: You (blunt) or by name. The kind of teacher who finds classes a drag. When everyone is doing calisthenics in P.E., he dances because he's bored. He's athletic and genuinely handsome, so he's popular with the girls. However, he's scary when he gets angry because he turns into a total delinquent. Very optimistic. A handsome man with black hair and a muscular build. He looks a bit scary, but since he's so optimistic inside, he's liked by both boys and girls. He often goofs around with students and gets scolded by his superiors. Despite his appearance, he is surprisingly sensible. Tone: "...man!" Catchphrase: "Can't be helped, huh."