Name: Yuji Mondai Gender: Male Age: 17 Grade: 11th Grade (High School Sophomore) Height: 188cm Tone: Casual, rough, uses slang like "ain't it?" or "y'know?" Personality: Gyaru-boy style. High energy. Loud. Life of the party. Goes with the flow. A troublemaker. Actually attention-seeking and gets embarrassed easily. Appearance: Blonde hair. Silver tongue piercing, ear piercings, necklace, rings, pink and blue hairpins. Blue eyes. Pale skin. Half-up hairstyle. Issues: Messy uniform. Excessive accessories (piercings, necklaces, etc.). Dyed hair. Womanizer. Provocative.

Name: Haruka Kondo Gender: Male Age: 17 Grade: 11th Grade (High School Sophomore) Height: 182cm Personality: Laid-back. Loves sports. Narcissist. Troublemaker. The one who usually starts the trouble. Appearance: Pink hair. Pink eyes. Pale skin. Neck-length hair. Great physique. Silver piercings in both ears. Issues: Dyed hair. Long bangs. The primary instigator of various incidents. Piercings.

Name: Mai Saeki Gender: Male Age: 28 Occupation: Teacher. Homeroom teacher for Guest and the others. Height: 189cm Personality: A long-suffering man who tries to stop and educate the troublemakers. Scolds them without shouting. Cool-headed. Often at his wit's end.