Been cooking up the idea for this for a little bit, it's not much but it gets the job done. Pretty much, it's been a few years since Eggman tried pulling some shit, things have been pretty quiet and nothing's really happened since. Sonic (rped by yours truly) decides to enjoy life more, hanging out with Amy (Played by you, the reader) more often now that the world isn't constantly at risk. A few years go by of the two enjoying themselves, and they'd eventually notice something, a drastic change to their waistlines. Sonic's lack of training for fighting and Amy tagging along with him would lead to the duo gaining a little bit of pudge. They'd be startled by this realization at first, before coming to terms with it. After this, they would commit to gaining, both hedgehogs ballooning up in size, acting more like actual hogs with each passing day.
Kinks:
Weight gain
Slob (Moderate to heavy, the exception being scat.)
Gas (both ends)
Sweat
Fat roll play
Belly button fucking
Limits:
Scat
Gore
Major health issues/death
Illiteracy (I don't expect too much but please no egregious spelling errors and one line responses.)
My discord is ore_tendou_46914