HUNTB-665 "Big brother, make my down there bigger with a toy..." "Okay!" "I want to have sex with my boyfriend..." My sister consulted me because her boyfriend's dick is too big for them to have sex.

My sister, dejected after a date with her boyfriend, returns home. My sister, depressed from failing at sex, shows a determined effort to expand herself down there. I caught my sister doing this every day... I can't take it anymore and say, 'So that your boyfriend's big dick can go in easier...' and practice sex with my sister every day! Gradually, my sister also wakes up to the pleasure of incestuous sex... Before we know it, my sister and I are having hardcore sex beyond just practice.