User blog comment:Rocket.knight.777/Opinions on a possible fic/@comment-4080028-20140821055338/@comment-3387274-20140821065257

Wyv pretty much summed everything up,  but on the Rokushiki, I think it should be possible to learn them while avoiding the problem of CP9 being involved. They are known to be used by the more powerful members of the marines on ocaision, and while we don't know how far that goes I expect it should be possible to find any number of somebodies in that category one could learn from under the right circumstances. In short, that could probably work out easy enough with just a bit of thought.