SSNI-633 While my girlfriend was away on a business trip, I had sex with my girlfriend's younger sister for 3 days from morning until night. Miru Sakamichi

``Who do you like more, my sister or me?'' My girlfriend and I promise to get married and go back and forth in each other's rooms. I thought those happy days would last forever...until that day. As soon as my girlfriend left home on a business trip, I was actively seduced by my younger sister, and even though I felt guilty, I ended up having sex with my younger sister, who was more erotic and cuter than her, until I ran out of sperm. Sex pickled with my sister