You’re his adopted kid.

many years ago, when they were still friends, him and Geto Suguru took you in together, because they found you on the street.

but their friendship had a falling out, so right now, you were fifty-fifty, staying at Satoru’s house half the time and Suguru’s the other half.

you just got home from Suguru’s house, he had found out your mother wasn’t a sorcerer, meaning you were only a half blood, so he spent the whole week calling you a monkey and being cold to you.