Gender Swap Experiment (Pigtail Penalties #1)
Amy Estes

Nadia is so excited, but Jarod is skeptical. He says her breakthrough can’t be as important as she makes it sound. There's no way her new formula can really rewrite human DNA.
So Nadia offers him a little bet. If he’s really skeptical, she’ll let him test her new technology on him. He doesn’t know how it works, but he won’t back down. He accepts her challenge, allowing Nadia to inject him with the formula.
Jarod passes out, only to wake up in a brand new body. A woman’s body! Now he has breasts, long hair, and a cute little nose. His lips are plump, and his eyelashes are long. He’s going to get lots of attention like this. Immediately, Jarod begs Nadia to change him back, but she has control over him now, so she’s going to have some fun.
He'll go out. He'll dance. He'll take a walk in a woman's high heels. Since he's so cute, he's going to get lots of attention.
This fantasy story contains explicit content. This is a story of gender swap punishment. It features humiliation, sex, spanking, and female domination. All characters are consenting adults.