Board Thread:Theories/@comment-25592681-20141028201509/@comment-25592681-20141028202031

I think that the MS a reciever of spiritual energy, let me explain: if a uchiha wants to activate susanoo the muss imagine a dark avatar with mental energy, thus the process of yin release, then the uchiha procedes to Chanel that energy ito there MS, then the MS stabilazes the Susanoo into reality, which resolts in the loss of eye sight. So in theory the MS balaces out the mental energy with physical, thou where dous the sharinganget that energy, whel from the uchihas body, that's why using MS hurts so much.