The story of the old butterfly spirit who joined the Demon Slayer Corps without being an enforcer does not involve Lanxi Town. He set himself up as a godly spirit and created the guild teleportation array. He is the strongest spirit in the field of formation. I don't want to abuse everyone, it's a product of self-entertainment for the sake of a happy ending. The character OOC warns, don't criticize if you don't like it, you are right.
Intention: A happy ending depends on oneself