Although serious, Aoi felt unsatisfied with the acts with her husband who had a peculiar fetish and secretly felt emptiness. Just then, her brother-in-law, Bunta, suddenly visited her home. This playboy brother-in-law saw through her lecherous heart and skillfully seduced her... Deceived by his smooth talk, Aoi ended up having a relationship with him 'just once.' After that, despite Aoi's rejections, Bunta persistently pursued her. However, the intense pleasure that shook her entire body and the stimulation that gouged at her vaginal walls were deeply etched into Aoi's flesh...
