Mari Ko continued living with her daughter after marriage, enjoying a shared household. She maintained a good relationship with her son-in-law, Takt, who had been working remotely more often lately, spending increasing time at home. Over time, Mari Ko repeatedly witnessed Takt masturbating, stirring strange emotions within her. Learning the reason, she discovered that Takt’s huge cock made sex difficult with her daughter, leading to their growing sexual incompatibility. With her own marriage long devoid of intimacy, Mari Ko began servicing Takt’s massive cock under the pretense of helping her daughter’s marriage. As she touched his thick shaft daily, long-suppressed desires slowly awakened, enveloping her in a newfound, overwhelming lust.