Board Thread:Naruto Discussions/@comment-26135923-20150707130017/@comment-5936871-20150709012709

Chaosattractor wrote: The Adamantine Chains are something of a bloodline limit - Karin sort of activated them under stress. Boruto has the blood - Kushina had the chains, too - and Karin can teach him if it's actually a thing that needs to be taught. Kakashi is pretty good with seals too IIRC.

Also I imagine a lot of these things were written in scrolls and shit. Kushina left Uzushiogakure as a small child and it was destroyed not long after, but she knows quite a few of their techniques. There's an Uzumaki shrine/temple/thing on the outskirts of Konoha that holds the Shinigami masks; my headcanon is that Uzushio sent their artifacts and scrolls there for safekeeping as the war got worse for them, or that Mito brought them with her. That's true, but it doesn't fit Boruto's appearance, personality, namesake, ect imo at all. I'd rather see him combine Rasengan and Chidori, and use a bunch of other techs than do the chains. Though if Himawari uses them, that would be cool.