A beautiful wife with overly sensitive lips who gets wet without resistance just from a kiss even though she hates being playd by her father-in-law Tsukasa Aoi

The movie revolves around Tsukasa, a woman with extremely sensitive lips, and her complex relationships with her husband Kazuya-san and her father-in-law. The story explores themes of forbidden desire, marital issues, and the blurring of boundaries within a family. As the plot unfolds, Tsukasa finds herself torn between her loyalty to her husband and the unwanted yet intense attraction she feels towards her father-in-law.