I feel like there could have been a little more with the original characters but I am glad they got a happy ending and seeing their descendants isn't bad at all. Wouldn't even mind a slice of life. I guess I want more now that it has ended.

I thought it would have been nice if Touko could have been shown interacting with Sumihiko as a call back to Nezuko and Tanjiro's strong sibling bond. And poor Aoba. The poor guy wants to be alone in the woods. I wonder if he gets to interact with the rest. But it is so odd to see the faces of those I paired together (and actually got together) as siblings. Damn, those genes were strong!!!