I think you are right, cause Minato's goal was for Naruto to have complete control over Kuuby,so what he needed to control Kuuby is a seal,Torii Seal...Torii Seal.
You must be registered for see links
settle tiger...i did read ur first post, i dont think that's 'that jutsu' ..reason being they made it out to be such a secret and than reveal it as soon as he attains it? i think its somethin naruto's saving for tobi/madaraRead my first post.
Yeah Minato said that Jinchurikies can't use it.i thought a jinchurki cant use the death reaper seal..plus u can exploit it by using shadow clone...and why would death reaper seal require powerful chakra such as the kyubi's?
OH!so far all we know is ..its called 'that jutsu', it requries the foxes chakra, and the frogs knew about it....its not ftg, its not rasengan and its not tbb...i believe its a move minato left behind so naruto could defeat tobi/madara with