My father's remarriage partner is a young and beautiful woman who is the same age as me. On top of that, she had huge breasts, so there was no way anyone could see her as a mother. When I was cooking or cleaning, I was curious about that plump dynamite body, and while I was always chasing it with my eyes, I began to have obscene fantasies. One day when I was spending such frustrating days, I finally couldn't stand it anymore and went to my mother-in-law who was taking a bath.