Cheating the Cycle of Life- A Padded Pony Collab

King Sombra was pretty sure that his dark patron goddess wasn't very happy with him, for reasons he couldn't understand. That, or he simply had to learn to delegate things to servants, instead of begin the truly absolute despotic rulers he wanted to be.

"I mean, if He was happy with me," Sombra muttered, as he unpinned the diaper of a physically regressed Princess Luna. "He would've told me to commit infanticide, or at least make the regressed Princesses less bothersome as tots."

Princess Celestia, for her part, kicked her hooves in the air, squealing and giggling, before peeing once more on her opened-up used diaper. Meanwhile, Princess Luna and Princess Cadance were taking a nap in a nearby crib, with Princess Twilight sent to Sombra's minions for "major biological restructuration," in the attempt to make taking care of her easier.

King sombra sighed.

"You couldn't wait some more, could you?" He muttered, as he slowly slid away the used diaper and threw it in the dirty laundry pile nearby, which, by that point, was close to touch the ceiling.

"I regret having sold one quarter of my liver for house these brats," King sombra said, as he took a pink cloth diaper from underneath the changing table and quickly pinned it under the butt of a giggling Celestia. Sombra then smacked her across her tiny face, which made her cry out extremely loudly.

King Sombra sighed of both relief and despair.

"Cries of pain and discomfort are a lot better when they're unusual... but at least she isn't laughing at me." He said to himself, as he lifted Princess Celestia up with his magic and brought her in the other room, so that he could put her to sleep without waking Luna and Cadence.