Boku no Kawaii Musume wa Futago no Kenja - Ch. 6

[MangaDex]

 

[Madologist]

You are supposed to be nearly 40, with the life experience of raising two children and managing a business and you just let some random smug lad walk over you.
Waltz there and punch that smug grin out, not as a mage, but as a father and a man!

Leave the spineless mc's for isekai harems for just once...

 

[NicholasTurner]

If the teacher had requested a duel beforehand than his actions would be more understandable but he didn't he attacked them from behind in an ambush, that's assault no matter how you spin it.