Her Faithful Student

 Twilight really respects her mentor Celestia, and isn't afraid to find new and creative ways of demonstrating that respect.

"That's it. Squeal for me, little piglet," Celestia cooed as her hand struck Twilight's ass. The girl trembled in her bonds while her Queen's cock thrust in and out of her and the buzzing vibrators seemed to channel all her blood into her throbbing nipples. This next O was going to be huge...