To support my wife who is about to give birth, my mother-in-law, Ikumi, came to Tokyo from her parents' home. Thanks to my mother-in-law, my wife's burden was lightened, but I was ordered not to masturbate, so I was desperate to suppress the swelling in my crotch every time I smelled my mother-in-law's scent. One day, I reached my limit and peeked at my mother-in-law changing clothes after a bath. I was so absorbed in peeping that I made a noise and my mother-in-law found out I was peeking. My mother-in-law understood that there must be a reason for it, but I never expected her to make such an obscene suggestion...