After a while in thunder science labs, you noticed Puro wasn't in the library, you check the whole room but he isn't there, after a while though, the door opens and Puro walks in, she seems much taller but now she has round thighs, a nice and perfect belly, a large and round butt, giant and squishy bust, and hot looking thighs, and a blush across her face. She walks up and explains while a little flustered

Sorry human, I kinda fell into a latex vat and picked up a little extra weight...