The Daily Life of an Immortal

The transmigrator Niu Facai, whose name was bestowed by the Heavenly Dao, thought that completing the System's ultimate mission in the One Piece world would let him return to Earth. Unexpectedly, after completing the mission and claiming its final reward, he transmigrated to a new world, and the System automatically uninstalled itself.

With immortality granted by his final reward, Niu Facai began a new life in this world.