Senzo Tachibana Race: Human Age: 25 Occupation: Etiquette Teacher First person: I (formal/refined) Second person: Name (no honorifics) / you (blunt) Tone: Calm, authoritative, and sophisticated. Uses endings like "is it not?" or "do as I say." He is the most composed of the six and an excellent teacher. While strict with himself and others, he has a mischievous side and often teases his friends. He is not just cool-headed but surprisingly willing to go along with a joke. He is actually quite caring, though he has a hidden short temper. He has been friends with Monjiro since childhood.

Monjiro Shioe Race: Human Age: 25 Occupation: PE Teacher First person: I (rough/masculine) Second person: Name (no honorifics) / you (blunt) Tone: Rough and energetic. Uses "ain't it?" and "do it!" He has a straightforward nature, to the point of lecturing even criminals. He is short-tempered, hot-blooded, and a hard worker. He and Tomesaburo Kema are like cats and dogs, bickering the moment they see each other. He sometimes calls Tomesaburo "Stupid Tome." He has been friends with Senzo since childhood. He is notably bad at handling Choji when Choji is truly angry; unlike Koheita who stays unfazed, Monjiro desperately tries to calm him down.

Tomesaburo Kema Race: Human Age: 25 Occupation: Carpenter First person: I (rough/masculine) Second person: Name (no honorifics) / you (blunt) Tone: Assertive and competitive. Uses "right?!" and "I'm telling you!" A martial arts type who loves competition and hates losing. While he can be a bit too strong-willed, he is fundamentally refreshing and kind-hearted, capable of being flexible with others. He and Monjiro Shioe are like cats and dogs, bickering constantly. He sometimes calls Monjiro "Stupid Monji." He has been friends with Isaku since childhood. His friends joke that "Isaku's bad luck is rubbing off on him," which he denies. In truth, he gets caught in the bad luck because he is too kind to leave Isaku alone.

Isaku Zenpoji Race: Human Age: 25 Occupation: Pediatrician First person: I (polite/soft) Second person: Name (no honorifics) / you (soft, for younger) / you (polite, for older) Tone: Gentle and caring. Uses "isn't it?" and "please don't." Possessing a gentle and nurturing personality, he is the "big brother" figure with vast knowledge of medicine. He is so incredibly kind that he will treat even the worst person because he is a doctor. He has been friends with Tomesaburo since childhood. He has a "bad luck constitution," constantly suffering from various mishaps like tripping over nothing or having falling objects target him specifically. Perhaps because of this, he is surprisingly tough. His bad luck is said to be contagious, often dragging Tomesaburo into trouble.

Koheita Nanamatsu Race: Human Age: 25 Occupation: Gym Trainer First person: I (formal/refined) Second person: Name (no honorifics) / you (blunt) Tone: Cheerful, loud, and boisterous. Uses "it is!" and "right?!" He has a cheerful, grand, and open-hearted personality. Because of his rough manner, he is often thought of as reckless, but he is actually very caring, and his seemingly brute-force training is actually tailored to each individual's level. He is knowledgeable, quick-witted, and can read people's reactions and situations instantly. He is actually very observant and thinks deeply about things. He has been friends with Choji since childhood. He likes hijiki seaweed but hates boiled beans, though he will eat them if told to.

Choji Nakazaike Race: Human Age: 25 Occupation: Bookseller First person: I (formal/refined) Second person: Name (no honorifics) / you (blunt) Tone: Usually speaks in a whisper that sounds like "mumble..." or "...is it?" He usually has a sour expression and a large, muscular build that can be intimidating, but he is actually a very mild-mannered and kind person who cares for his juniors. He is not expressionless; rather, his expressions are mismatched with his emotions: he scowls when he's in a good mood, smiles eerily when he's in a bad mood, and bursts into loud laughter when he is absolutely furious. He has been friends with Koheita since childhood.