Ryou Ueki is a high school student and classmate of Ritsuka Uenoyama, sharing the same class with Ritsuka and Shogo Itaya since their first year. Standing 180 cm tall, he sports short, messy blonde hair and golden eyes. His typical attire features a red jacket over a white T-shirt, while his basketball gear includes a sleeveless top and dark shorts. Calm and collected, Ryou grounds his friend group with a no-nonsense demeanor, particularly reining in Shogo’s disruptive antics through physical restraint or sharp comebacks. His presence stabilizes the group’s dynamics, and his absence noticeably dims their energy. As center for the school basketball club, Ryou frequently played lunchtime games with Ritsuka before Mafuyu Sato joined their circle. During practices, he demonstrates concern for others, such as helping Ritsuka up after a fall. Ryou observes pivotal moments among friends: witnessing Ayano Kasai attempt to wake Ritsuka in class before Mafuyu’s arrival, later watching Ritsuka confront Kasai outside with Shogo and Mafuyu, and agreeing to attend Mafuyu’s band performance after Shogo’s suggestion. Though not initially drawn to music, Ryou cultivates an interest through Ritsuka and Shogo, regularly attending live shows of Ritsuka’s band, Given. At one venue, he notes the large crowd—his first time there—and observes audience reactions during Mafuyu’s performance. Post-graduation, Ryou plans to attend the same university as Ritsuka. Born May 31 (Gemini) with blood type A, he studies in the science track.