Kanon is a first-year student who meets Oka Erina on the school volleyball team. Erina recommends her a massage place, and Kanon agrees to go.
Once there, Kanon receives an erotic massage that blows her mind. Even much time later, she cannot forget how nicely the chiropractor fucked her. Thus, she comes back for another round, which was part 2 of the doujin I think. This parody covers that too.
It’s pretty good, the action is hot and the girls too.