The Giant of the Demon Sect Is Actually Myself

The First Demonic Sect's Spirit-Sealing Tower [Hidden Town] seals the spirit-conferring fairy world. The chief disciple was seriously injured and on the verge of death in the battle between good and evil. He wandered into a certain spiritual world and lost his memory. The protagonist travels through time to start a life that others see as cheating... Stop it, stop it! Well, because a guy named System was more than a year late... Different immortals and different worlds are waiting for you to discover.