User blog comment:B214/Question and Answers 4/@comment-116.75.186.9-20150202192408/@comment-1359322-20150203053447

Senjutsu (sage arts) is not something everyone can learn them. Even for Youkais, only a selected few have access to it.

Also Zi23, Sairaorg can't use Senjutsu, he can only use Touki.