Azusa is forced to marry a wealthy man to help the struggling factory survive. Forced to live as a sex slave in the name of a wife, Azusa is forced to have a relationship with not only her husband but also her father-in-law with her husband's approval and accepts his penis. Treated only as a convenient tool, Azusa is ordered by her father-in-law to provide sad carnal entertainment to a client to soothe his desires. Even though the sex is without love, Azusa feels pleasure from the hardness of the penis penetrating her vagina, and she climaxes with lascivious cries in this forbidden sex slave life.