Board Thread:Fourth Databook/@comment-4366149-20141122004623/@comment-4366149-20141125074301

Elveonora wrote: Re-read the fight against Itachi and Sasuke. It was said Kabuto has Jugo's power and then Kabuto goes on about how Jugo's Clan have unique bodies that passively absorb natural energy. Also Jugo is one of the subjects shown when the blood soup flashback is shown. On top of that, in the chapter Orochimaru's revival, Jugo himself confirms Kabuto uses Senninka.

On the part: "Kekkei genkai are techniques/abilities that are inherited through blood. But not all traits inherited through blood are kekkei genkai" I never disagreed, it's true, but nature affinities, life force and so on are things that everyone has while passive absorption of natural energy and X-Men transformation aren't.

I guess I should have clarified that I was well-informed on those events offhand. There is nothing about Kabuto injecting himself with Juugo's whatever. I've checked again to confirm that my memory was not messing with me. Kabuto described the connection between Juugo's ability and natural energy, and then adds that he has surpassed it. And even if we assume a hypothetical case where Kabuto had injected himself with Juugo's stuff, I already thoroughly laid out in my above posts why your theory is still untenable. It is possible for someone to incorporate foreign somatic material into their body and subsequently obtain abilities that are not kekkei genkai.

Juugo's clan has the ability to absorb natural energy far much more easier than other regular people; likewise the Uzumaki have an incredible life force that's far greater than regular people's. Nothing makes Juugo's ability any more special than the Uzumaki's. Contrast Juugo's ability to the Sharingan's and see the clear differences between a confirmed, time-honoured kekkei genkai and a speculative one: No matter how many times a regular shinobi slaps, punches and trains themselves, their eyes will never turn into the magic eye, but if they keep at it long enough, under proper tutelage, they will be able to replicate Juugo's ability and even surpass it. Morever, a regular shinobi cannot replicate the Uzumaki's ability no matter how much they train, which makes the Uzumaki's unique life force a better candidate for kekkei genkai than Juugo's ability. This portion of you theory is also untenable because it is possible to have a trait that uniquely runs in a particular clan, and that is not a kekkei genkai.