Naming Conventions
My partner has been pointing out that all sorcerers/born in the sorcerer world have Japanese names and people in/from hole have different names
The only outliers I can think of are Shin, who was born in hole, has a Japanese name, but he is a sorcerer Also could potentially be named after the bodypart. And Ai Coleman who is from hole and wasn't born a sorcerer, has a Japanese first name, but he becomes a sorcerer later. He also really wanted to be one, it's possible he just chose Ai as a name to go by
It's been yeeeaaars since I read the manga and my partner is anime only. I can't think of anyone that entirely breaks this rule