Ava was the first to wake up the next morning and at first just lay there enjoying the feeling of Ethan's arms around her. It was a new month, and that meant a new form when she became aroused. But what form? With the pictures out of the calendar she couldn't check to see what was next and the photoshoot had been such a blur she didn't clearly remember what other costumes she'd worn or what order they'd gone into the calendar. The fish tail mermaid had been first because it was the one she was sure Ethan would enjoy. She was pretty sure there were some other mermaid costumes - a dolphin tail and an orca tail. Would those be different from her fish tail? There had been another odd mermaid costume like an octopus. The woman at the store called it a cecaelia, a term Ava had never heard of before. Had there been another mermaid costume? She couldn't quite remember - maybe it was a frog costume? She remembered flipping open the calendar and seeing herself as a faun so there was that at some point, but probably not for a few months. Ava remembered dressing as a catgirl, figuring any guy would like that. There was a long-tailed costume that Ava thought was supposed to be a snake. That accounted for maybe 7 of the 11 remaining months and she couldn't remember the others.
That first unexpected transformation had scared Ava, but as she got used to it and saw how much Ethan liked it she came to enjoy it. Honestly, she had started to really enjoy being a mermaid and was kind of sad to have the month end. Whatever transformation the next month brought her and Ethan should definitely experiment more with it. She wasn't scared about her next transformation; on the contrary, she was feeling excited about it.
Ava could excitement began to give her a warm feeling. She slid a hand down between her legs and rubbed her crotch. She was getting turned on by the mere thought of her unknown transformation! Her body began to tingle all over, especially her legs. Not waiting for Ethan to wake, Ava began to transform into...