Ayako

Ayako is the manager of the team and object of Ryotas affections. Strongwilled somewhat tomboyish and goodnatured at first Ayako does not seem to reciprocate Ryotas feelings for her which she knows of and will not until the end of the series. She is directly responsible for sharpening Hanamichis abilities for real matches by training him in the basics such as ball possession and dribbling. Her disciplinary style is midway between Akagi and Anzai while not as soft as the latter she is also not as hard as the former. Her last name is unknown. Curiously Hanamichi treats her almost as respectfully as Anzai even though she is in a lower position in the team possibly because of her gender since he is generally more respectful towards females. Ryota refers to her as Ayachan because of his attraction to her and she responds by calling him Ryota rather than by his surname. Source: Wikipedia