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I'm going on a trip with my sister for two nights and three days and having sex with her!? At the order of my sister, Nonoka, I ended up traveling in a group while pretending to be her boyfriend. We were trying to act like a couple and flirt, but when my sister's boobs and butt touched me, I was turned on immediately! We slept in one bed like a couple would, and I was losing my reasoning! "We're just acting! We can't do this! Stop teasing me with your fingers while licking my boobs! I'm gonna cum!" Nonoka was always strong, but was I going to lose to her foolishness and have sex with her for the first time!?

Some things are thicker than water. Kwak Jahyung lives his life surrounded by hot women - too bad they just happen to be his sisters, as his playboy father has more children than he can count. But boys will be boys, and Jahyung is no exception. After his older sister Hanna gives him a potion meant to screw him over, the two find themselves in a sticky situation that goes to show family can be closer than you’d ever imagine…