Leaving our parents' home, my sister Yuuka and I started living together. Yuuka, who seems tough on the surface, actually loves me a lot. One morning, Yuuka came to wake me up and saw my morning erection, which made her excited and she started licking it... "It's wrong because big brother is naughty, right?" Despite her tough exterior, my super cute sister's reaction went wild! A dream-like intimate incestuous sex!
