Norman kinda reminds me of Eggie-sensei from Iruma-Kun, it’s really just how he looks… But the two of them couldn’t be more different in regards to personality, Eggie would absolutely trounce him, he would make it absolutely clear how insignificant he is. Not because he’s annoying, but because he’s annoying and incapable of seeing his true lack of ability.
Go read Iruma-Kun and see for yourself just how tsundere he is, he cares about them even if he’s tough on them.