i dont mind op mc's as long as either
a.) he is weak and gets stronger
b.) despite his opness he has a fatal weakness that essentially makes his op abilities reasonable
c.) something happens that forces the mc to go on a journey to get an even stronger ability
or
d.) we all thought the mc was op but it turns out there was a whole world he didnt know about and hes completely average there.
That was dumb af. Seriously? His wife KNOWS that he's strong enough to defeat her and get the demon king to personally come and recruit him, but he needs to be protected from a random demon? Come on now.