Riko Aida

Height: 156 centimeters / Birthday: February 5

A second-year student who serves as the coach and manager of the Seirin High School basketball team. She is the only daughter of Kagetora Aida, who calls her "Riko-tan♡."

Commonly known as "Kantoku." She generally calls the team members by their last names with the suffix "kun," but she always calls her ex-boyfriend Kiyoshi by his first name, "Teppei." Additionally, she called Hyuga "Junpei" during the final stages of the match against Rakuzan.

She is responsible for strategy planning, schedule management, and creating training menus. Having been familiar with athletes' data and physiques since childhood, she possesses the same "reading eyes" as her father. However, she is extremely bad at cooking. Although her skills improve somewhat under Kagami's guidance, she still tends to add unnecessary steps, such as mixing in a large amount of supplements.

She is sometimes called cute, but she is self-conscious about her small chest, which is barely a B-cup, and views men who are attracted to large breasts as enemies. She also competes with Momoi, who often teases her about her chest, calling her a "little girl."

She is sincere and serious about basketball. Additionally, she sometimes serves as the narrator of the story.

She is highly intelligent, ranking 2nd out of 305 second-year students in the academic tests. She is the one who mainly calls Kagami "Bakagami" (idiot Kagami).