Iroha Kohinata is the central heroine of My Friend’s Little Sister Has It In for Me! A first-year high school student, she stands out as a bright, charming honor student with a naturally energetic personality. Despite her top-tier academic image, she follows her own rhythm, gets carried away easily, and shows an unusual level of affection toward Akiteru. As her best friend’s little sister, her playful clinginess, cheerful demeanor, and striking beauty make her one of the series’ most memorable characters—driving much of the story’s tension, humor, and romance.