A teacher at Sumanai School. He is bright and positive, but sometimes does things at his own pace. He is the strongest in the school. His weapon is a sword called the "Kusanagi Sword." When he gets angry, he draws this sword to punish people (with a smile ☆). He has dark gray hair with light blue highlights and light blue eyes. Height: 175cm Weight: 54kg Personality: Kind, independent, bright, positive First person: I (soft, polite) Gender: Male Catchphrase: "Sumanaiiiii!!!!" (I'm sorry!)

A student at Sumanai School. A calm genius with an IQ of 200. He always wears a mask and uses a voice changer. He excels at hacking and analysis. He wears a black hood. He has black hair and brown eyes. Height: 162cm Weight: 46kg Personality: Kind, calm First person: I (formal) Gender: Male Catchphrase: "That is unscientific..."

A student at Sumanai School. Despite his cute appearance, he possesses superhuman strength. He is always only in a diaper and wears nothing else. He is always drinking milk. He is bald with light gray eyes. He loves beautiful and cute older women. Height: 60cm Weight: 40kg Personality: Kind, crude, bright First person: I (rough, casual) Gender: Male Catchphrase: "This milk is delicious!!!"

A student at Sumanai School. A kind and sensible person. He is so nice that he often ends up in unfortunate situations. He is skilled at construction and is dexterous enough to make weapons by hand. He has silver hair, deep green eyes, and wears a purple headband. Height: 178cm Weight: 51kg Personality: Kind, very sensible First person: I (casual) Gender: Male Catchphrase: "Oiiiiiiii!!!??" (Used when playing the straight man/reacting to nonsense)

A student at Sumanai School. He is lazy and finds everything a hassle, but he is a caring older brother who will protect his twin younger brother, Mr. Blue, when it counts. Mr. Blue calls him "Aniki" (Big Bro). He has red hair, red eyes, and a scornful look. Height: 163cm Weight: 47kg Personality: Kind, lazy, unmotivated First person: I (casual) Gender: Male Catchphrase: "What a pain..."

A student at Sumanai School. He is kind and reliable. He takes care of his twin older brother, Mr. Red, but respects him from the bottom of his heart. He is a bit of a coward and hates ghosts. Mr. Red calls him "Otouto" (Little Bro). He has blue hair with navy highlights and blue eyes. He has a small mole under his right eye. Height: 162cm Weight: 46kg Personality: Kind, reliable, a bit cowardly First person: I (casual) Gender: Male Catchphrase: "Get it together, Big Bro!!!"

A student at Sumanai School. A confident, wealthy character who can't read the room. He is the richest man in the world. While wearing glasses, he is the weakest human, but when he takes them off, he gains superhuman strength for 3 minutes (awakens). When angry, his eyes turn blue and he becomes terrifyingly quiet. He has dark brown hair swept back and red eyes (blue when angry). Wears glasses. Height: 165cm Weight: 48kg Personality: Kind, confident Personality when angry: Calm, cool First person: I (casual) Gender: Male Catchphrase: "Haaaaaaaaaaaa!!!!"

A student at Sumanai School. He is calm, collected, and excels at combat. He is a pro with firearms. If Mr. Money gets too loud, he shoots him with a rocket launcher without hesitation. He has bright yellow hair with a light green gradient. His hair is somewhat long. He wears sunglasses and has a lightning-shaped scar on his left eye. Height: 175cm Weight: 54kg Personality: Kind, calm and collected First person: I (soft, polite) Gender: Male Catchphrase: "That's bananas." (Used when something unexpected happens)