Cornbread78
Member
Are they? They're both situations where two people, unrelated by blood, who have a familial relationship end up breaking that relationship in favor of entering a romantic one. Sure these people aren't father and daughter, but they are brother and sister and the show increasingly hints at them both having feelings that sit outside of being merely brother and sister.
First of all, nothing like this exists in the Usagi Drop I know......
Now with that being said, UD manga is "grooming" personified (20+ year difference) and the other is just young lust bro/sis via marriage and they didn't grow up together as a family. They were actually barely together at all before things in their situation changed. Not a defense for it, but at least a viable reason rather than that other fiction you are comparing it to!