Shoko lives with her ordinary husband and student son. But she had a secret that she couldn't tell her family. That is the desire to "roughly commit." After my husband and son went out as usual today, I was masturbating while imagining that I would be violently violated. However, my son who came home early happened to see the situation. My son started to say, "Mom, I had such a hobby. I'll keep my dad silent instead ...".