"Please take care of her until she comes back." While my wife is away on a long business trip, I'm going to live with my wife's mother, Mako. My eyes are glued to her huge breasts, which are visible even through her clothes. I want to see those exquisite breasts just once. I decide to peek, but I lose track of time as I stare at her plump body, which is far beyond my expectations. Mako notices my passionate gaze and we prepare to be scolded, but for some reason she beckons me...