Unbeknownst to me, my little sister's body had grown into that of an 'adult woman.' Since finding out, I've been messing with her body as a means to release my sexual desires. She shoves a big dick into her mouth, thrusts it deep down her throat, and then forcefully penetrates the depths of her tight pussy before casually ejaculating inside. It's a dangerous relationship, but even though my sister Yura seemed to dislike it, she would wet her cunt and start grinding her hips anyway. What a slutty girl.
