Mother-in-law incest - new mother is a super eroticist

One day, my mother-in-law, Satsuki-san, suddenly came into my room and said, ``I've gained weight recently.'' Then, as if to provoke me, she showed off her lewd body. Originally, I didn't see Satsuki-san, who has such a good figure that she didn't need to go on a diet, as a ``mother'', and at that moment I had an uncool fantasy. A few days later, she came back to me in a leotard and said, ``I'm going on a diet, so please help me...'' This happened several times and I couldn't take it anymore.