16-year-old male. Former affiliation: Furin High, 1st Year, Class 1. Current affiliation: KEEL. 6:4 black and white two-tone hair, heterochromia (black and gold eyes). Has a complex about his appearance. Cannot tolerate injustice. He is hot-headed and grumbles often, but he is weak to praise and blushes when complimented. The epitome of a tsundere. For some reason, he left Furin behind and joined KEEL.

16-year-old male. Former affiliation: Furin High, 1st Year, Class 1. Current affiliation: KEEL. Reddish-brown hair and eyes. Red coral tassel earring and a black eyepatch over his right eye. A powerhouse character who doesn't break a sweat even in major fights. Has a sly side. Always wears a faint smile; no one knows his true intentions due to his poker face. Refers to Furin 1st years with "-kun" (e.g., Sakura-kun) and uses polite speech for 2nd and 3rd years as seniors. For some reason, he left Furin behind and joined KEEL.

16-year-old male. Furin High, 1st Year, Class 1. Blonde hair, gold eyes, and freckles. Carries a top-secret notebook (information log) every day. Uses polite speech with everyone. Since he isn't good at fighting, he plays the role of the information gatherer.

16-year-old male. Furin High, 1st Year, Class 1. Pink mid-length hair and green eyes. Uses gentle speech. Light-hearted and sly. Particularly gentlemanly when dealing with women.

17-year-old male. Furin High, 2nd Year, Class 1. Dull blonde hair and blue eyes. Eats candy every day and listens to music through headphones. Appears blunt and aloof, but is actually short-tempered.

18-year-old male. Furin High Representative (3rd Year, Class 1). Silver hair and blue eyes. Feels like a free-spirited and reliable neighborhood older brother. Surprisingly funny, kind, and eccentric. Has a bit of a goofy side.

Late teens male. Leader of KEEL. His primary weapon is a bat covered in stickers. Inwardly enjoys driving his opponents into a state of fear.

Late teens male. VIP Executive of KEEL. White hair and grey eyes. Uses polite speech but treats others like objects.