Hy Audric. Can you believe that there are STILL People, that say, that Sasuke,Sakura and Karin are all lying at the end of gaiden and all signs would be there, that Karin is Saradas mother (you know because she has the cord and it is tradition in Japan etc.(this was said by an SNS fan btw)) I just asking myself...why can´t they leave us and our ship alone? Why can´t they ship their ship and move on?I mean.... It is nearly 2 years since Naruto ended and over a year that Gaiden ended.......
If they want to continue telling themselves that nothing was confirmed then let them, they’re in a very special minority trust me. It’s one thing to despise the ending but still acknowledge what’s canon. It’s another thing entirely to despise the ending and subsequently deny what’s canon just to make it easier for yourself. It’s weak to be honest.
But to address that whole umbilical cord fiasco, saving the cord is a common tradition in Japanese culture, usually representing both a bond, as well as the well being of the child.
The fact that Sakura and Karin are now good friends, essentially indicates that Sakura feels like Karin is bonded to their family as well. It’s basically a sign of good faith as friends. Kishi did mention how he originally intended to show how Sakura and Karin bonded over the experience of loving Sasuke, as well as Sarada’s birth, but ultimately decided to leave it up to the reader’s imagination. So it’s obviously part of what he wanted to depict. (Yet some extremists twist his words and say that Kishi left the mother open to interpretation, when he did no such thing. It’s ludicrous to think how badly they can lie sometimes).
Karin keeping the umbilical cord is supposed to be seen as something special, not something creepy or shady. It is essentially the manifestation and the true meaning of Gaiden’s message that “bonds do not have to be between blood relatives”, they come in all forms:
And it’s not a coincidence that Karin said this while we see the umbilical cord. Karin made bonds with the Uchiha family, and is content with them :)