Not sure how much anal training Alina requires. She seems to be quite competent... you can tell it from the way she holds that cock and leads it into her young butthole as deep as it goes. Of course in the end of the session her ass remains a gaping hole... but this is the thing that makes her hot.
Video from Liza Shay in 21Sextury (Anal Training of Alina)
Pictures from Liza Shay in 21Sextury (Anal Training of Alina)