Sayuki, the wife of a university professor, was still a female college student when she got married. For several years, she was subjected to sm training every night by her husband, who had a strong sadistic streak... But the professor couldn't handle the too intense nightly activities and died suddenly of a cerebral infarction, and Sayuki was tormented by a sense of loss. But the beasts appear, sniffing out the female sexual scent emanating from under her mourning clothes... Spanking, torture with a super thick toy, intense slaps, rose whip, anal expansion intercourse one-stroke whipping, glycerin enema. Sayuki transforms into a sexually voracious beast with M sexuality and craves extreme training!