Take the back alleys, you'll be fine (m)

You've handled pranksters before back at the academy, you've got a better guard against magic tricks than most. Thinking that, you decide to take the most direct route through the fairly well-lit and mostly empty alleyways.

Walking through the alleys, there are quite a few shops that face this way, surprisingly, and now that you're walking down the alleys, it's not as empty as you first thought.

You suddenly feel someone smack your butt. Somewhat prepared, you use [Mage hand] as you turn around, trying to brush off whatever touched you... but you don't see anyone, nor do you manage to catch another mage's mage hand. Worried, you check your coin purse and it's still there and seemingly untouched. Since you were warned about prankster mages, you're sure it's them, but you weren't prepared for some mere pranksters to be very skilled in magic. They were either far beyond you with their telekinetic magic, or had invisibility magic... or worse, both.

Either way, you didn't feel like sticking around to find out. So you started walking, rushing a little bit as you realise that you might be a little too underprepared for this.

It was a bit chilly earlier in the wagon, but now that the sun's had a chance to rise a bit, you find it a bit warm. The alley is especially warm thanks to a nearby smithy, a lizardfolk, you've never seen one before. You pause for a bit as you stare at him in a bit of wonder, forgetting about your rush for a second. Then a pleasant breeze passes through the alley, cooling it down for a few seconds and making it pleasant... and a bit odd, more pleasant than you've felt before.

As you're distracted by that, you lock eyes with the lizardman, who gives you a thumbs up. He seems like a friendly fellow.
Only after you turn away from him and continue walking do you realise what that weird feeling was... your panties are gone.

It takes all of your willpower to not just freeze up in the middle of the alley, and you barely manage to slip away from the crowd behind a few crates.
Assessing the situation, you're wearing your blouse, jacket, skirt, and boots... but your panties are missing. It must have been when your butt was smacked, probably some rogue mage's prank! And your skirt isn't particularly long either, so when that lizardman gave you a thumbs up... no, surely he was just a friendly guy and it didn't mean anything... right?

Either way, you have a few sets of underwear in your backpack, but you can't just open it up and put on panties here behind these crates that barely hid you? Where anyone could possibly see you...