Starting as a wisp of a lingering soul after transmigrating, Lu Haisheng cultivated all the way to become a Sword Immortal of the mortal realm. He knew early on that sooner or later, he would have to pay for getting such an overpowered advantage. So, before his soul dispersed, he decided to do one more good deed.
(Also known as "Building a Golden Finger Grandpa from Scratch" and "My Sword Doesn't Spend All Day Thinking About How to Tie Up Its Scabbard") I really enjoy reading slice-of-life stories, so this will probably be a sweet, everyday-life kind of story too. Probably.