A week of being invited by the shiny body of my stepmother who aspires to become a lingerie model...and drowning over and over again as instinct

One day, when I live with my wife, my stepmother suddenly moved to Tokyo. Apparently he was scouted by an underwear model and ran out of his parents' house to try it out. My wife and I decided to stay with my stepmother at home for just a week to keep my head cool. And that night, on the way to the bathroom, I heard a noise from my mother-in-law's room... I was thinking about it and looked into the room and found my unfortunate stepmother wearing lingerie. I can't take my eyes off my stepmother's seductive expression and the underwear I usually don't see...