Tower Defense 06 (Patreon)

 Usually Anna has to bring her own chair for any classroom she visits,  because none of the usual furniture fits her... unusual physique.  Luckily she has her little friends who are more than willing to  volunteer as a chair, so Anna can relax and enjoy the comfort of a nice  rest for her large butt, while focussing on her tasks. This time it's  Kathi's turn. The petite girl is the newest in Anna's "collection" and  has yet to get used to a proud weight of over a thousand pounds pushing  down on her, but she's wiry and stronger than she looks. Right now she's  down there for a little over an hours, but her best time was 4 hours  straight until Veronica had to take over.