Leave Peroh for now

Jessica : "okay so once I know a little more transfiguration magic we'll spend an evening experimenting. In the mean time you need to destroy those panties and get your own"

The boy flushed crimson.

Peroh : "why do I need new panties?"

Jessica : "because you can't wear mine and you'll need something that fits when we learn how to do the transformation."

That prospect seems to excite him into action.

Peroh : "what if anyone sees me?"

Jessica : "oh, now you feel shame underwear thief? The shops are automatic, no one will know. Just wait until they're empty."

He grumbles agreement.

Peroh : "I guess I'll go see if there's anyone there now..."

You approve and send him on his way. It was a strange situation but at least you knew what happened to your underwear now and you might just enjoy this project.

With plenty of afternoon left you decide to stop by your dorm room and see if any of the other girls are around. It's a short walk back.