温泉旅館にカップルで旅行。入浴後に彼女はエステを受けると彼氏は旅の疲れで寝てしまう。するとエステティシャンの手がダイレクトに胸を揉み始めて…さらに性感帯ギリギリも責められ感度が上がっていく彼女！焦らしに焦らされ感度は最高潮へ！イケないとわかかりつつも体は正直で、彼氏が横にいるという背徳感と快楽に耐え切れず発情し、必死で声を殺してイキまくる！さらに延長してまでエステティシャンとの背徳のNTRセックスに溺れる…

A couple travels to a hot spring inn. After bathing, the girlfriend receives a spa treatment while her boyfriend falls asleep from the fatigue of the trip. Then the esthetician's hands begin to directly massage her breasts… and she is teased right on the edge of her erogenous zones, increasing her sensitivity! The teasing brings her sensitivity to its peak! Although she knows it's wrong, her body is honest, and she can't resist the feeling of transgression and pleasure with her boyfriend beside her, becoming aroused and climaxing while desperately trying to stifle her cries! She even extends the session, indulging in a transgressive NTR sex with the esthetician…