[Naruto + No System + Uchiha Itachi Fanfiction + Second Reincarnation + Little Brother + Deep and Thought-Provoking]
After Impure World Reincarnation: Release, Uchiha Itachi's consciousness returns to his childhood, back during the Third Shinobi World War. His memories seem like a dream, but the Mangekyo in his eyes is undeniably real. Armed with knowledge and information from the future, and carrying a mature outlook, Itachi changes many events and leads his little brother, Sasuke Uchiha, and the shinobi world down a brighter path...
In the post-Hokage era, God of Ōtsutsuki, Ōtsutsuki Shibai, descends upon the shinobi world and destroys everything good in it. Itachi's brother, lover, child, and closest friends all die horribly. At death's door, Itachi uses Izanagi to escape by a stroke of luck. With help from Orochimaru, another survivor, Itachi uses the Treasured Tool Rei to return to the past once more. He opens those Mangekyo again and, with an outlook utterly unlike before, grasps the truth that only by becoming a god can he earn the right to challenge the gods. Thus begins his path to godhood, as he strives to defeat the Ōtsutsuki and protect his little brother and the shinobi world...