My sister has been possessed by a succubus!! My usually gentle and quiet sister has become a completely different person! My sister, who used to be so kind and quiet, is now attacking me with the intention of targeting my penis! And to make matters worse, my parents are going to be away for three days starting today!! Even if I ejaculate, she keeps demanding more sperm and relentlessly pursues me!! "I'll take all your sperm!" I thought about my sister returning to her original self, but I kept getting fucked over and over again... My body and mind were completely drained by the succubus sister during those three days.
