As they recovered, Kevin introduced himself. Kendra was reluctant to reciprocate.
"If you ever want to get together for something like this again..."
"Thanks, Kevin, but this isn't something I do normally. The sex with strangers thing that is. I do turn into a frog girl every day."
"We don't have to be strangers."
Kendra sighed. She found a towel and began drying off. With the shower off and her body having been thoroughly soaked, the green color began to fade from her skin and the webbing shrink back into her fingers and toes. Rebuffed, Kevin got his own towel, dried off, and put his clothes back on.
Kendra's clothes were soaked, but she was fortunate to have her gym clothes in her backpack and changed into shorts and a t-shirt with no panties or bra. She stepped out of the shower to find Kevin waiting for her.
"At least tell me your name. You're the first girl I've ever had sex with and I'm the only other person at this school who knows your secret."
"Kendra" she said. "And thanks. You were alright for your first time."
After making sure the coast was clear, the two left the locker room headed their separate ways. Kendra decided it was in her best interests to leave school early. Kevin went to the rest of his classes, but his mind really wasn't on academics.
---
When Kevin took a shower that night, he jerked off to the memory of Kendra earlier that day. After a night of froggy dreams, he slept through his alarm. When he awoke in the morning he made a surprising discovery: his dick was big, green, and erect. He dressed for school, but it felt like someone had stuffed a cucumber into his shorts. He put on the loosest pair of boxers he owned.
Driving to school, he noticed there was a thin membrane of skin between his fingers extending to just below the first knuckle. Webbing! Was he going to transform into a half frog creature like Kendra? He had to find her and talk to her about what was happening to him.