In the aftermath of his wife's infidelity and abrupt departure, Akihiko receives a heartfelt visit from his mother-in-law Sayuri, whose own hidden past of being deceived and working as a call-girl fuels her guilt-ridden apology. As she comforts his distress, her bewitching big boobs and sensual presence ignite his long-buried desires, sparking fantasies of blow job intimacy and creampie fulfillment that hint at a budding harem. Sayuri soon senses the shift in the air, drawing them closer in this steamy premiere episode of the hentai series.