Twilight Sparkle and Princess Celestia haven't been an item for very long, but during a trip to Saddle Lake with only the two of them, Twilight finally gives in to the temptation. Celestia's body proves too alluring to resist, in particular, the royal backside. Not that the other princess actually minds...

Written for Nagiman, as part of the Summer Sin Celebration 2021. Art by ea657.

Contains Anthro, butt-worship, rimming, anal, alliterations, and gross misuse of a bottle of sunblock.