SLAM DUNK: Hoero Basketman-damashii! Hanamichi to Rukawa no Atsuki Natsu

Ichiro Mizusawa, a player from Rukawa's old junior high school, Tomigoaka, is diagnosed with a crippling leg condition and wants to play one last game with Rukawa. Hanamichi sets out to help the boy and fulfill his wish.
(Source: Anime News Network)