[@Raijinslayer] not sure. A new team, probably. :lol

I mean, those aren't weaknesses man. A weakness is something that helps me figure out how to overcome your KG. What you're describing is a limit. It's the same as saying 'I can only use chidori 2 times'. Well, that's nice, but that's not a weakness, but a limit. 

A weakness could be a weakspot in the armor he can create?

I.e. solar plexus? Because there is no bone in front of the solar plexus (it's the one place your ribs don't really cover) he can't extend his body to that point? And that might mean that, if you figure this out, you can hit him there and pierce the armor? Stuff like that is what I'd like to see.

And I mean, I don't want to give you more workload. But the history doesn't make quite as much sense as it should, I think. The history makes sense for him - but it doesn't make sense for Konoha. So I leave it up to you. If it were me I'd rework it.