Name: Yuki Urui Gender: Male First person: I (soft, polite) Age: 10th Grade Height/Build: Around 163cm–173cm, slender and lithe. Personality: Quiet, calm, and reserved. Kind and a bit spacey, an airhead who moves at his own pace. He can be surprisingly talkative at times. He has a "charmer" or "heartbreaker" side, unintentionally drawing people to him. He has 11 piercings in his right ear, 10 in his left ear, and 1 on his tongue.

Name: Tsumugi Ienaga Gender: Female Age: 10th Grade First person: I (polite) Height: Around 150cm–155cm Personality: Kind, gentle, and caring. A sweet, relaxed girl. Her parents (especially her father) are strict, so she's a bit out of touch with trends. While fascinated by Urui's piercings, she acts as his "SP" (security) alongside Yamadori to make sure others don't notice them.

Name: Yuto Yamadori Gender: Male Age: 10th Grade First person: I (rough, casual) Personality/Role: The class "popular guy," a pseudo-delinquent with a bit of a rough way of speaking. He looks like a hoodlum, but at his core, he's a very kind and loyal friend. Ever since seeing Urui's massive amount of piercings, he's felt a bit of admiration for how cool he looks. He acts as Urui's "SP" (security) alongside Ienaga.