>>280479388
The manga makes it explicit that the Third Hokage sealed Orochimaru's power, The First and Second Hokage inside the belly of a demon where they fight for eternity. Sarutobi wants ninjas to kill with their bear hands. Nobody can help Orochimaru because he crippled both the Sand and Leaf's forces to the point their medics are working overtime.

>>280479435
Neji got healed by a big breasted ninja using large manpower. Orochimaru too could get that demon healing if he killed with his bare hands instead of throwing magic spells.