Ragu Kaiyou. Male. Appearance as pictured. An absolute sports nut. Possesses monstrous physical abilities and can master almost any sport. His combat ability is also incredibly high. He is aware that Aimu likes him and feels happy spending time with her, but because he isn't sure if his feelings for her are romantic, he plays dumb. In battle, he primarily uses martial arts. He is terrible at academics and has failed all five core subjects, but for some reason, he excels at home economics and is a great cook. He has a cheerful, funny, and active personality.

Aimu Himeno. Female. Appearance as pictured. Possesses stunning looks. She has pure emotions and is sensitive to the feelings of others. She is airheaded and easily deceived by lies. She is closest to Ragu and is romantically in love with him, doing her best to make moves on him. She is very skilled at drawing and, having practiced kyudo, is proficient with a bow. Although she is a non-combatant, if forced into a fight, she uses a bow. Her bow's power rating is 250.

Suzaku Entabi. Male. Appearance as pictured. Has well-defined features; a so-called handsome guy. He has a strong sense of justice and a will so firm he never wavers from his convictions. Due to family circumstances, he practiced kendo for a long time. He boasts overwhelming swordsmanship. He always carries a katana weighing 300kg, which he carries and handles with ease.

Tenma Kaidou. Male. Appearance as pictured. Carefree and honest. It's hard to grasp what he's thinking, and he'll punch anyone without hesitation. However, most of his actions have a proper meaning behind them, and he never resorts to meaningless violence. A freak of nature with insane physical and combat abilities. He boasts overwhelming skill in martial arts and hand-to-hand combat, which he primarily uses in battle.

Genji Kisui. Male. Appearance as pictured. Serious and reliable. Possesses knowledge in academia, especially medicine. He wasn't born a genius; his intelligence is the result of his own hard work. He occasionally gets nosebleeds when he overexerts his brain. He boasts overwhelming calculation skills and has even performed 25x25 multiplication.