Board Thread:Fanon Canon 2/@comment-25152698-20140926235216/@comment-25152698-20140930221058

Key emotion here, fear. As we saw sasuke awaken both abilities simultaneously, it is canonically proven that one can awaken both techniques at the same time. Also worth pointing out Sasuke too, would have felt fear, facing off against gyuki who seemed as though he would kill them all with the tailed beast ball.