A young teacher at a certain school is engaged to his sister Yayoi. However, his sister Yuria, who was born with a masochistic sexual fetish, forcibly fell in love with the teacher who would become her brother-in-law after smelling the scent of a sadistic man. Eventually, she is also caught by the perverted principal, and her sister, who is pushed from the peak of happiness to the depths of madness, and her sister, who cannot suppress her masochistic desires and volunteers for hard training. Using all means, including public opinion, jealousy, and plots, the sadistic maniac ensnares the beautiful sisters. For the sake of the sense of transgression without reason, intense excitement, and the ultimate pleasure that makes you drunk and infatuated.
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