Haruna Wakazato plays drums for the high school band High×Joker. He exhibits a sweet-natured curiosity and possesses a significant fondness for food, being especially partial to sweets like donuts. At 18 years old, he is older than his bandmates, who are 16 to 17, having been held back in school twice. These academic challenges prompted him to join the club, where he participates in study sessions with other members to prepare for exams while also pursuing idol activities.