Hajime is trans-masc.
He's really bad at maths.
He likes to be in high places (trees and the like)
He never seems to get cold, like he'll wear a t-shirt in the middle of winter.
He cuts his own hair.
He likes dark chocolate.
His sleep schedule is horrible, he usually falls asleep at like 4 AM.
He doesn't understand how to hold a knife properly.
He dislikes children.
