I only recently re-watched this movie and can barely remember what happens in it. Or maybe I do but there isn't much to remember. The main "conflict" in this movie is the one between Sakuragi and Oda (a basketball player from his previous middle school aka before Sakuragi got into Basketball). Oda is very serious about loving Basketball and is veeeery insulted by former hooligan Sakuragi's participation in the sport. While said conflict isn't that new, it also isn't particularly bad. It is however badly executed or rather just plainly rushed. It's like there is a full 10 minutes missing from the story that exploresboth characters' development. Also Oda's girlfriend is the girl that rejected Sakuragi in the beginning of the manga which is honestly the most entertaining thing about this movie.
In conclusion this was more a filler anime episode (with tv quality and tv runtime) that wasn't offensive. It is pretty easy to watch but also quite forgettable.