One Sword to Shatter Eternity: A Demon's Vow Across Lifetimes

He lost her once—and swore it would never happen again. Reborn into a brutal world of immortal cultivation where sects clash and destinies crumble, he'll walk the forbidden path of demonic power, sever every mortal bond, and defy fate itself to find her. No prophecy can chain him. No enemy can stand before his blade. Through endless wars and shattered realms, he searches alone, ready to sacrifice everything for one chance to spend this life by her side. But if the heavens refuse... then let one decisive sword strike end it all.