Living in the wizard tower can be scary even if you get used to it. Your room is right upstairs, and other rooms like the kitchen and bathroom are downstairs.

your parents stopped checking on you every night so you could be independent. And here you are, needing to pee, but afraid to go to the bathroom

Then you create a magic circle, summoning a demon.

"I will grant your wish, kiddo. But there is a price you must pay" he said, grinning

"accompany me to the toilet"

he was silent, his brow furrowed

"huh??"