UGSS-043 The one who came to the used book buying service was a friend’s mom? It seems she couldn’t stop getting excited during the erotic book appraisal…

Oops, I’m short of money and can’t buy manga! It’s an important erotic book, but it can’t be helped, let’s sell it! I was embarrassed to bring it to the store, so I called a business trip to buy it… it was my friend’s mom who came! Moreover, during the appraisal, I started masturbating while reading an erotic book at the front door of my house.