Hell, I'm not even sure Usagi Drop was a "grooming-a-father-figure-into-a-husband" scenario. Rin basically dropped a bombshell on Daikichi out of the blue, with no grooming, and expected him to go along with it. I pretend everything that happened after what the anime covered as non-canon at this...
This and Usagi Drop are different. Rin was an child with the mental capacity of a child from the beginning. Shou is a reincarnated adult into a child's body, and she has the mental faculties and emotional range and stability of an adult. This isn't a "raising a wife" scenario.
It's been a while, but IIRC Kuro doesn't actually understand what love is, so doesn't actually realize she's actually in love with him? I think her and the bigshot goddess lady had a discussion about that right after he got the blessing. It's been a while since that part though, so I might be wrong.
@lyreflyn Which is fine. Hollywood movies used to tend to be slightly US-centric, so a manhwa being Korea-centric is to be expected. Besides, as an American, I can totally see American hunters being exactly like that lol