Naruto: the Posthumous Son of the Fourth Hokage

Time traveled to Naruto and was born from the belly of the dead Kushina. Born inauspiciously, he was adopted by Danzo. Being chased by the Fourth Hokage's enemy, he discovered that he possessed the death attribute chakra. Discovered that he could obtain the Blood Succession Limit from the dead Bai's body. Konoha is collapsing, Orochimaru, I need your power. Itachi and Zuo Dujue, Itachi, your eyes belong to me. Kill Nagato alone to obtain the Samsara Eye.