Fairy Tail: The Godslayer's Infinite Journey

Lin Yuan once slew a god in a world where deities walked the earth, becoming a Demon King who stood beyond the laws of nature. But he died in that final battle, unknown to anyone. When he opened his eyes again, he had become a boy adopted by Fairy Tail. The powers he had once wrested from the gods lay dormant, leaving him with a monstrous physique, unfathomable magic, and the God Slayer Magic he had awakened at birth. He thought all he had to do in this life was protect his noisy guild and help the white-haired girl move on from her pain. Then the shattered gates between worlds opened once more: floating cities, underground labyrinths, demon territories, miniature garden cities, Itogami Island, wars between heroic spirits… One world after another converged before his eyes. And when time on Tenrou Island stood still for seven years, Lin Yuan finally set foot once more on the land where he had first slain a god. This time, waiting for him alongside his lost powers was a golden-haired knight who pointed her sword at him the moment they met. “If you claim to be a king from the past, first prove that you are worthy of slaying a god.”