Kairi has to leave her outfit at school.

Sora didn't wanna make this too weird too quick, so he decided that asking one of them for some kind of sex act was probably a bit too much for their first UA. It took him a bit of time to think of something that she'd probably refuse, but that he wouldn't feel bad about doing to her under these circumstances, for now anyway. In the end, he remembered something he read online and decided to use that for inspiration.

As for deciding which girl would be the 'victim,' well, Selphie was cute in her own way, but he'd had a bit of a crush on Kairi for years.

"Okay, Kairi." She perked up and listened. "This one's gonna take a little while, and we'll have to plan it out a bit more thoroughly in advance, but here's what you're gonna do. One day after school this week, you're going to strip naked in the classroom and leave your clothes on your desk, and you aren't allowed to get dressed again until the next day when you put the same outfit back on, if it's still there. If it isn't, I'll provide you with some clothes to wear through the school day. That's not too much, is it?"

The other guys don't raise any objections, and Kairi responds, "Sure, that's fine, but just for future reference, any rule breaking caused by a UA is not punishable. In this case, if Sora provides me with pants instead of a skirt if my outfit's stolen, then I'm considered not breaking the 'No Pants' rule so long as I remove the pants as soon as possible. In this case, once school's over for the day.

Also, thank you for choosing me first, Sora." Kairi's smile was the second most beautiful thing Sora had ever seen. THAT particular honor went to the image of Kairi in nothing but her underwear. Though he had a feeling that her naked body would easily trump even that.