バレー部の部活中にケガをしてしまったみゆ。近所の整体院に駆け込むがそこで待ち受けていたのはエロ整体師。「嫌」と言えない気弱なみゆは明らかに患部とは関係の無い鼠径部や胸のマッサージを受けるしかなかった。『本当に治療なの？』心でそう思っているうちに淫行施術はエスカレート！気付くとパンツの下は愛液で溢れていた。なすがままされるがままエロ整体師に肉棒を差し込まれ、開発されていくみゆ。次第に潮を吹き散らしながらイキ恥を晒していくのであった…。

Miyu gets injured during volleyball practice. She rushes to a nearby chiropractic clinic, but is greeted by a lecherous chiropractor. Unable to say no, the timid Miyu has no choice but to receive a massage on her groin and breasts, areas clearly unrelated to her injury. "Is this really treatment?" she thinks to herself, but the lewd treatment escalates! Before she knows it, her panties are soaked with her own fluids. She is at the mercy of the lecherous chiropractor as he inserts his penis into her and begins to develop her. Gradually, she begins to squirt and expose her shameful orgasms…