This fighting style is nearly forgotten in the Yamanaka Clan because of how it is to learn. Its difficulty lies in the fact its practitioner's mind must be supernaturally powerful. It requires a powerful mind because one must be able to use yin energy alongside their very consciousness. If one has a weak mind, their consciousness might reject the yin energy because it is an outside substance. The techniques derived from this fighting style use the yin energy with their consciousness in one of two ways.