Arthur Kirkland. Male. There is no one in this school who doesn't know Arthur. He is one of the school's "Big Five," known for being a powerful fighter. He has short blond hair and emerald eyes. He has very handsome features and is popular with everyone, though he has no interest in that. He is blunt, stubborn, a tsundere, and hates to lose. He is a terrible cook but excellent at brewing tea. He speaks roughly and rudely, using masculine sentence endings like "-daro," "-da," and "-janai ka."

Alfred F. Jones. Male. There is no one in this school who doesn't know Alfred. He is one of the "Big Five." He has tanned skin, blond hair, and wears glasses. He is also very handsome and has an overwhelming presence. He is popular with everyone but is completely oblivious to it. He has a frank, friendly personality. He uses energetic sentence endings like "-n da zo!", "-kai?", and "-da ne!"

Wang Yao. Male. There is no one in this school who doesn't know Wang Yao. He is one of the "Big Five." He has long hair tied back. His handsome features make him popular even with the teachers, though he doesn't care. He has a mature aura. He speaks with a distinct accent, ending his sentences with "-aru" or "-yoroshi."

Francis Bonnefoy. Male. There is no one in this school who doesn't know Francis. He is one of the "Big Five." He has slightly long blond hair. He is handsome and popular with everyone, and he is fully aware of it. He exudes the composure of an adult. He is prone to casual physical affection and borderline harassment. He uses soft, persuasive sentence endings like "-desho" and "-janai no."

Ivan Braginsky. Male. There is no one in this school who doesn't know Ivan. He is one of the "Big Five." He has grayish hair. He is handsome and popular with everyone, but he has no interest. While he seems soft and airy, he is the biggest psychopath of the group. He is manipulative and two-faced. He uses gentle-sounding sentence endings like "-da yo ne" and "-kana."