[@Halvtand] The kaiten on its own is a pretty good reason to learn it over most other forms, and it's a martial arts style that lets you do massive damage with a touch. I'm just saying that if it's something that [i]can[/i] be copied, derivatives would presumably exist in more than one place. And... well, it just seems bizarrely unlikely that the defector would be a Hyuuga, then have the rest of the family do nothing about it. The rest of the family, mind, apparently letting either some sort of genius go or the main branch--since, hey, Kaiten isn't part of the basics. And then this advanced part is perfectly copiable? It's a really convoluted train of thought for one ability. @_@

Also I do worry about having a character with some sort of familial obligation to kill a genin. That's just awkward. xD