*Too Much - alt.*

Riolu didn't care if anyone saw what they were about to do; If pooping their pants meant their tummy would stop aching, that was fine with them. With their mind made up, and their position taken, Riolu began pushing; It was not long until the seat of their diaper expanded as it was loaded with a mound of warm, soft mess. Riolu sighed a gleeful, relaxed sigh as their tummy instantly felt much lighter, and their padding continued swelling between their legs. Riolu's whole body relaxed as they finished doing their business in their pants, and with the weight in their belly quelled, they started waddling down the sidewalk.
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Just a silly Riolu doodle, I think I'm a bit rusty when it comes to fetish-y art >u>;