Nicknamed as "Kyoro", Kyōya is the main protagonist of the series. He has black hair and eyes and he has a muscular build. He is the sole male member GJ-bu, joining the club after being kidnapped by the others. He is a kind and courteous person who is the usual target of the other girls' teasing, frustration and sometimes, their affection as well. Despite his seemingly spineless appearance and behavior, Kyōya seems to have an innate talent in dealing with the opposing sex, like making them skip a beat when he temporarily assumes a more manly and less formal kind of speech or when carefully brushing their hair, a talent he claims he learned upon regularly combing his little sister's hair.