To be able to assist the training of the gal sister who started ass training. - She wasn't interested in her at all at first, but she gradually got excited about her sister's ass getting bigger and bigger. - She was fascinated by the big ass in her ass training that sticked out and couldn't stand it and slipped from behind! - Her older sister was surprised and resisted, but she started to feel her asshole. - She is very excited about her black and fluffy ass like a foreigner and repeatedly ejaculates! More..