Tom stepped into his apartment greeted by empty boxes and dirty dishes. Tom lived alone where pants are optional, so the most obvious thing for him to do was to drop down to boxers and a tank top. Something unusual caught his attention as he sat down on his couch to play video games. A fire engine red bikini sprawled on his coffee table.

His thoughts ran wild. I haven’t had a girl over in months. I’m pretty sure this wasn’t here when I left this morning. I locked the door, right? Is anything missing? Why would someone come in and then leave a bikini behind? What the fuck is going on here? Am I going crazy? Tom reached for the bikini and inspected it. Yup. Definitely real.

Tom tried to shrug off the mystery of the red bikini and continued booting up his Switch. He kept trying to come up with explanations for how it got there as he queued up an online match of Smash. No matter what he tried, he couldn’t get his mind off the mysterious new piece of clothing.

So he gave in. Tom hoped that trying it on would get the damn bikini out of his system.

He was wrong.

Very wrong.

Confused titillation filled Tom as he stripped naked in preparation for something he never saw himself doing in the past. Or maybe he felt drawn to do such things but was inhibited by societal norms and a strong sense of male gender identity. The bottom went on quickly with no confusion. Tom was a bit stumped by the top. Bras weren’t exactly a mystery to him, but he had trouble pairing strings and tying them.

Tom felt weird.

It was only in part because he put on women’s clothing for the first time. His body began changing. The sensation was weirdly pleasant. It reminded him of the rush of excitement and nervousness he experienced the first time he tried to talk to his high school crush. Tom’s arm, leg, and chest hair began retracting as his head hair started extending and changing colors. His testicles retreated into his insides followed by his scrotum turning inside out and forming a vagina. His penis rapidly shrunk and formed a clitoris. C-sized boobs quickly inflated onto his chest while his ass formed into a curvaceous figure.

Tom was now a woman and about 2 inches shorter with chestnut-colored hair and a lovely figure. And of course wearing a fire engine red bikini.

“HOLY FUCK! Did that just happen?” he shrieked in a feminine voice. Tom prodded his brand new boobs to check if they were real. “WHAT THE FUCK JUST HAPPENED?” Still in shock, he checked his crotch to discover a pussy in place of the usual hardware. I’m a dude. I can’t be a chick. I can’t stay like this. I want my old body back. Why the hell did I put on this bikini? What the fuck is wrong with me?

In a panic, Tom unstrung the bikini in hopes that it would turn him back into his old self. Though completely naked, nothing happened. “ARE YOU FUCKING KIDDING ME? I DON’T WANT TO BE A WOMAN!”

Spritely laughter filled the room. “AAAAAAAHAAHAA! This is my favorite prank to do to humans!” A small humanoid figure no taller than 10 inches hopped onto the coffee table.

“What the fuck did you just do to me?” asked Tom to the creature.

“Don’t worry. It isn’t permanent.” the creature assured him. “I’m Gulrick, your Messenger. I came here to deliver an invitation to the Underground Academy of Modern Wizardry. I just couldn’t resist fucking with you before I introduced myself.”

“So how do I change back?”

“Oh. Right. All you have to do is put on any piece of clothing you wore while you were a guy. It restores your body to the state it was in before you put on the bikini.”

Simple enough. Tom put on his boxers and snapped back to normal.

Gulrick noted, “Feel free to keep that bikini. You’ll find it oddly addictive to change your sex. Wizards do it all the time.”

Tom stared back with a look of confused disgust.

“Consider this your initiation.”