Roro Morooka belongs to the fictional idol unit Ongaku Shoujo. At 18 years old and in her third year of high school, she stands 140cm tall with a youthful appearance suggesting a much younger age. Born on October 2 in Toshima City, Tokyo, she holds the Libra zodiac sign. Primarily raised by her grandmother, she developed old-fashioned preferences and knowledge. This upbringing manifests in habits like using traditional cold remedies—wrapping a green onion around her neck and placing umeboshi skin on her forehead. She enjoys making tsukemono and avoids electronics and negative comments about others. Her designated theme color in the idol group is green (#0ABA0A).