(I got inspired to write this short story when I was roleplaying with a woman who wanted to be a giant Pikachu rampaging through a city, eating people and electrical infrastructure, and I was all the people she was eating. It was a simple, but fun roleplay. However, after she got full and everyone remaining thought they were home free as she left the city, she laughed and ended the roleplay with: “Then I unexpectedly stepped on a thunder stone and evolved into Raichu. I ended up needing a

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Eevee eagerly touched the water stone. Inside her tummy, there was a blinding light, then it got a little bigger and the texture greatly altered. Instead of slimy flesh, it now felt like a waterbed held together by magic rather than a mattress. Given the similarity in molecular structure between water and the cells of a Vaporeon, that checked out. Your best friend’s stomach was now a heated waterbed, and the most comf

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Eevee eagerly touched the moon shard. Inside her tummy, there was a blinding light, then it got a little bigger and...not much else. You sighed with relief, but then your world began swaying before suddenly shifting gravity 90 degrees. Now nocturnal, Umbreon felt the sleepiness hit her like a freight train at the ungodly hour of noon.
This wouldn’t have been a big deal, if her stomach juices didn’t start making

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Eevee eagerly used the fairy move TM. Inside her tummy, there was a blinding light, then it got a little bigger and...somehow, a lot more comfy than it already was. In reality, the characteristic calming aura of Sylveon was getting to you, which wouldn’t have been a problem...if only the evolution hadn’t reactivated her digestion, and you couldn’t let her know since you didn’t even realize you were s

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Eevee eagerly touched the leaf stone. Inside her tummy, there was a blinding light, then it got...smaller? You then remember to your horror that Leafeons subsist entirely on photosynthesis and don’t require as much of a stomach, since it’s only used for drinking water. You tried to call out to her, but her stomach already shrank so much it was suffocating you, and your consciousness went dark shortly after.
&ldq

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Eevee eagerly touched the thunder stone. Inside her tummy, there was a blinding light, then it got a little bigger and started tingling. Not because she started digesting you, but because as you just remembered to your horror: Every cell in Jolteon’s body produces an electric current! You tried to call to her, but your muscles had already frozen up, and you faded from consciousness shortly after…
“Wow! I&

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Eevee eagerly touched the ice stone. Inside her tummy, there was a blinding light, then it got a little bigger and...cold...very cold. Colder than you intuitively thought cold could feel cold.
“Damn, Glaceon’s body temperature can get as low as -60 Celsius...what was I thinking?” You think.
“Awesome! I’m a Glaceon! ...Oh no, you’re shivering! You’re not too cold in there, are you?&r

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Eevee eagerly touched the fire stone. Inside her tummy, there was a blinding light, then it got a little bigger and...hot. Deadly hot. Flareon’s average body temperature is 700-800 Celsius! With your final thoughts, you curse yourself for forgetting this as a Pokemon researcher.
“Alright! I’m a Flareon! I can’t wait to test out my flamethrower! Don’t worry, I’ll go outside first!” S