TL;DR Good, but hardly utilizes its gym setting.
The librarian, a social media personality, and one hostess club as a secondary location are all very distinct from each other. Unfortunately, "Sakura Gym Girls" does not use the gym enough to justify that title. Yet with detailed backgrounds and ok music, it again makes sense that this release even got a demo: certainly one of the more memorable Sakura titles in recent years.
The tone is also more melodramatic than comedic this time around - giving the typical faceless male protagonist a nice sense of pace in this Sakura one-shot (not be part of a series), and the H-scenes of the patched version are certainly above average but not so "pornographic" after all (the artist Inma won't do explicit stuff). The game does not break out from the usual formula either, of course - which means one ending for each female character, and a foursome. Just don't expect any true gym fetish, it all stays superficial.