Ragnarok falls, and a battle breaks out among the gods. The gods either fall or fall asleep forever. The age of myth ends. Human beings no longer believe in gods. The era of mankind arrives. Human science and technology develops rapidly and enters the interstellar age.
After the War of the Gods, Hades, the king of Hades, hid among humans and watched the rise and fall of the world with cold eyes. When he opened his eyes again, Hades returned to the beginning. Before everything started, Hades had an extra light brain and memories of the future.
Literary version: Go back to the past, subvert fate, control life and death, the underworld, six reincarnations, orderly life and death!
Summary in one sentence: Pluto Hades was reborn in the past, Hades and Tartarus traveled through time and space, the anecdotes the two house gods had to say.