Aoi Ogiyama is a childhood friend and same-year classmate of Subaru Hasegawa, having played basketball alongside him since their middle school days. She previously served as a center and power forward for Kirihara Middle School’s girls’ basketball team, where her versatility and athleticism contributed significantly to the team’s success. Standing 163 cm tall, she has a moderately athletic build. Aoi harbors unspoken romantic feelings for Subaru, often becoming flustered or jealous when other girls interact with him, though he remains unaware of her affections. Deeply concerned for his well‑being, especially after his high school basketball club is suspended, she organizes basketball sessions with mutual friends to keep him connected to the sport. When she discovers Subaru coaching an elementary school girls’ basketball team, she initially misinterprets his intentions and forcefully demands he stop. After a confrontation resolved by a basketball match, she witnesses the girls’ dedication and reconciles with Subaru, joining him as an assistant coach. She later briefly coaches the fifth‑grade team before returning to assist Subaru full‑time. Her personality blends assertiveness and compassion: she is principled and quick to react against perceived misconduct, sometimes physically emphasizing her disapproval, yet she is fundamentally caring, offering Subaru academic support and patiently guiding younger players.