Naruto: the assassin of honor Book-1

watch the story of a young boy who not just had a demon sealed within him but also a legendary Russian from another universe. said the universe is now erased or is it. Watch as Naruto faces new enemies and old demons of his past. all the while he is being mentored by a being in his head and an old warrior of China. Will Naruto's place in a certain peacekeeping organization be put at jeopardy or will he face his enemies and triumph. and what will the past of this strange assassin that is helping Naruto within his mind reveal?