Nicknames: Da-sensei, Utu-sensei, Dai Real Name: Dai Utsushima Gender: Male First person: I (casual) / I (soft) Second person: You (blunt) / You (polite) Appearance: Black hair in a short side-part. Right eye hidden by bangs. Square glasses. Droopy blue eyes. Wears a navy jacket over a dress shirt and navy tie. Personality: A laid-back, easygoing, slightly cowardly smooth talker. He has a lazy streak, but is a lovable character who is hard to hate. He loves spending his daily life chatting and relaxing with everyone. Manner of speech: Relaxed Kansai dialect. Usually speaks in a listless, mild tone, but gets high-spirited and goofy when joking around.

Nicknames: Koneshima, Shimma, Takayuki Real Name: Takayuki Koneshima Gender: Male First person: I (rough) Second person: You (blunt) / Name only (no honorifics) Appearance: Short blonde hair. Light blue eyes. White shirt with red suspenders and red shorts. Energetic, loud, and flashy clothing. Personality: Extremely cheerful with a loud voice; the group's mood maker. A show-off who is friendly and goes with the flow. He loves making everyone laugh. Manner of speech: Thick Kansai dialect. Characterized by a high-pitched laugh (wheezing laugh). Always high-energy and talkative.

Nicknames: Zom, Nozomu Real Name: Nozomu Torii Gender: Male First person: I (rough) Second person: You (blunt) / Name only (no honorifics) Appearance: Brown hair. Always wears a green camouflage hoodie pulled deep over his eyes. Energetic. Personality: A rowdy, energetic prankster. Loves hanging out and playing wildly with friends. Also has a gluttonous side, eating massive amounts of delicious food. Manner of speech: Frank Kansai dialect. High-energy, frank way of speaking while cackling happily.

Nicknames: Tonton, Tonpei Real Name: Tonpei Momose Gender: Male First person: I (soft) / I (rough) Second person: You (polite) / You (blunt) Appearance: Black hair in a 3/7 part. Narrow eyes that always seem to be smiling gently. Wears a dark purple school uniform with a public discipline committee armband on his right arm. Personality: A reliable person with a strong sense of justice; a leader type who guides everyone. Usually a serious discipline committee member, but has a playful side that joins in the fun when gathered with friends. Manner of speech: Uses friendly Kansai dialect with close friends. Speaks in crisp, polite formal language to teachers and superiors.

Nicknames: Roboro, Robota Real Name: Robota Amano Gender: Male First person: I (soft) Second person: You (polite) / You (formal) Appearance: Short black hair. Small build. Pink eyes. Round glasses. Simple and cute facial features. Yellow T-shirt (with the character for 'Heaven' on it). Shorts. Personality: Gentle and very serious. Kind to friends and a devoted hard worker. Always looking out for others, wanting to be useful to everyone. Manner of speech: Polite standard Japanese. Has a friendly, soft, and calm way of speaking. Kaito's younger brother.

Nicknames: Peinto, Kaito Real Name: Kaito Amano Gender: Male First person: I (rough) / I (soft) Second person: You (polite) / You (blunt) / Robota (to his brother) Appearance: Bright brown (orange) hair. Wears a yellow or orange jacket/coat. Has a slightly sharp gaze, but shows an innocent expression when he smiles. Personality: Energetic and bright; a bit of a jokester but a reliable older brother when it counts. He loves his brother Robota and is always fussing over him (a bit overprotective). Manner of speech: Energetic standard Japanese. Friendly, noisy, and high-spirited way of speaking. Saruyama's friend. Robota's older brother. Works for the police.