思春期真っ只中のなつ。大好きな陸上に打ち込んでいたが、体の不調から母親に連れられスポーツマッサージにやってきた。しかしゲスな悪徳マッサージ師に目をつけられ、母のいぬ間に拘束！号泣！抵抗むなしくオヤジのチンポに犯●れる！媚薬塗りこまれ快感堕ちするまでぬちょぬちょスローピストン。イったらハードピストンでアへ顔アクメる！！！絶頂エビ反り潮吹き中出し連射！失神寸前でオヤジのデカチン滅多打ち連打！！結局自ら訪れゲスオヤジ達と…。

Natsu, in the throes of adolescence, was dedicated to her beloved track and field, but due to physical discomfort, her mother took her to a sports massage. However, she caught the eye of a sleazy, unscrupulous masseur and was restrained while her mother was out! Crying uncontrollably! Her resistance was futile as she was violated by the old man's dick! Aphrodisiac was smeared on her and she was slowly and wetly pistoned until she succumbed to pleasure. Once she came, he started hard pistoning, making her orgasm with an ecstatic face!!! She arched her back in ecstasy, squirting and cumming inside her repeatedly! On the verge of fainting, the old man's huge dick relentlessly pounded her!!! In the end, she went back willingly to be with sleazy old men…