"Until those dreamlike three days came, we were relatively close as siblings of the same age." One day, just after my parents went on a trip, my sister suddenly kissed me. I feel that kissing goes beyond the skinship between siblings... My sister didn't care about my confusion, she pressed her ass against me, grabbed my erect penis, and suddenly guided it to her pussy! From there, three days of sex between me and my sister, who gave in to their sexual desires, began.