4 words:
Wife with wolf ears.
For all the crap this manga has build up, I still find the bits of romance between the MC and his wolf-demon wife as lovable. It's actually a rare sight to have such straight-forward good real romance between a polymorphic female character and a MC that isn't just part of some harem. Yeah, the MC is surrounded by woman, but they are just friends/allies and not love interest to the him.
As much of a bland shit this might be, it's still better than lots of other shits that are brown and smelly laying around in the Isekai genre. Especially for a Isekai where the MC is so OP, this one doesn't feel like it's too much forced all the time.
Don't get me wrong, it's far from perfect and there clearly are moment where the LN author clearly display his inability to follow through with all of his decision in the story and, then, the artist has to work with that crap for the manga, but it's not the worse out there and he does recover the story in an interesting way at moments.
