"Oh no you don't, you bad girl. You were trying to trick me and escape, weren't you?" said Amy as she furiously rubbed John's enlarging clit. She knew she had to work quickly or she would lose her little pet.
John bucked and moaned, but he could not escape. Amy had his leg pinned and the pleasure made him feel weak. He had been so close this time. The potion Amy had given him to change into a woman was only temporary, and would wear off as long as he didn't have an orgasm every so often. Amy had gotten complacent and almost forgotten that he was due to change back. He had felt his old male body slowly returning, his abdomen churning as his ovaries began to shift into testicles, switching from production of estrogen to testosterone. His labia grew longer and thinner, beginning to reform the scrotum that would eventually hold his developing testes. He had almost made it, then his voice had cracked when he said goodbye to Amy as she began to get dressed so she could leave the motel room to pick up their dinner. Amy's eyes grew large as she realized her mistake and she leapt on him like a cat, striping him and pining him down.
Amy's hand slipped as John's cunt grew moist. She pressed hard on his chest with her left hand to hold him down as she examined his vagina. The clit was already as large as her thumb and still growing, desperate to return to its original form of a penis. He was still changing back into a male, but she could tell by his breathing and the movements of his body that he was close to an orgasm. She had gotten to know his body very well over the last few weeks and she was not eager to lose her prize. John's back arched as he bucked and writhed and Amy massaged his sensitive breast roughly. That was all it took. The battle was over as John loudly gasped as he reached his climax.
John lay on the bed exhausted. Amy was tired, too. She slowly stood up and examined him.
"Now, I can't have you trying that again. What am I going to do with you?" asked Amy.
John was too tired to protest. When Amy first asked him to change into a woman to be her lesbian sex partner he had happily agreed. She was hot and it sounded like fun. But after a few weeks he was tired and wanted to change back and return to his old life. But Amy had worked very hard to mold his body to her idea of perfection. And now she was obsessed with his body.
Amy considered restraining him, but couldn't risk the maid or someone else finding him. After all, eventually she would have to go back to her job to support them. She needed a more permanent solution. But it was so hard to think. All she had done was have a nonstop sex marathon with John for the last few weeks. His body was all she could think about. It was probably why his trick - asking for a little break to rest and recover - had worked so well. She just wasn't thinking clearly anymore.
She looked back to her bag and spied another vial containing the elixir that had brought her so much pleasure. She wasn't sure if it would work so she hard prepared an extra sample of the potion. A thought suddenly occurred to her - what would happen if she gave him a second dose? Would the effects last twice as long? Or maybe even be permanent? Would he become twice as petite, cute and sexy? The scroll had warned not to use an excessive amount, but Amy could not resist her curiosity.
Amy grabbed the full vial and walked towards the exhausted John, still recuperating on the bed.
"Open wide, my pet. Your lover has a special treat for you..."
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This is a post from the original opentgcaptions, sent to me by a kind Discord user who wishes to remain anonymous. Original author: Annie307