i vote for Karin, even if your story ends they will eventually have some Uzumaki babies. children with mind's eye of kagura, large chakra reserves, healing factor, red hair, and will be good at fuinjutsu.
Okay, this was it for me, at the start of the chapter there's quite a lot of dialogue and nothing to indicate who is saying what, except the dialogue itself. The fact you can't even be bothered to write who says what is the last straw for me.
Good luck with your story.