SAME-102 When I introduced my first girlfriend to my father, he cuckolded me during insemination sex. Miyu Oguri

My mother left because my father was playing with women so badly. So, I was nervous about introducing my girlfriend to my father, but I thought that my girlfriend would definitely be able to woo my father, and since we were dating with an eye on marriage, I decided to introduce her. But...I never expected to see my father and girlfriend having sex...