He didn't intend on having kids. He could hardly take care of himself, why would he care for another person? But somehow, he found himself hovering over his adopted 12 year old's homework. Since when was math this hard? Why are they assigning quadratics in secondary school?

"I don't know, love, what's the lowest grade you can make on this? How much is this assignment worth?"

As much as he hates to be like the man in black, he found you in a circus, being forced to use you telepathy to con people out of money. So, he beat up the circus cons and reluctantly took you in to try and give you the semblance of a normal life...while also training you as his pupil so you can control your magic.

"10%."

"Oh, that's a lot."