Tsubaki, who began living with her daughter and son-in-law after her husband's single transfer, one night witnessed her son-in-law Takeshi, who was rejected for being too big, engaging in masturbation. The imposing sight of his towering, massive ○○○ left Tsubaki, who had been sexless, captivated. Persuading herself that her daughter's mishandling was her fault, Tsubaki continued to tempt him day and night. Eventually, unable to resist any longer, Takeshi, knowing she was his mother-in-law, devoured her lascivious demeanor...
