Responses

He has a total inferiority complex and tries to over-compensate by hunting for expensive demon cores while on monster subjugations. He's so naive, he doesn't even understand what his wife most desperately needs: her rightful power and respect. Even today, you see men not being aware of inter-familial conflicts, or they can't be bothered with "trifling matters".
I hate the ml yet I pity him
Excluding all those negativity happened to his duchy, I hate him for giving a cold shoulder to his wife which leads people disrespect and disregard her as a Mistress of the duchy.
I don't see any good character from ML.
Except, as the time turned back which fl decided to change her husband for the sake of herself.