UGSS-043 - My friend's mom came to buy my erotic books...

Ah, I'm broke and can't buy any manga. I decided to sell my precious erotic magazines with tears in my eyes. I was too embarrassed to go to the store, so I called for an on-site appraisal, but who would have thought it would be my friend's mom? She started reading the erotic books right there at my front door and got so turned on that she started masturbating...