Someone who transmigrated into Muzan, missing their homeland, bought a big ship and planned to return to the Central Plains with their subordinates to make a life there (and look for the Blue Spider Lily along the way). But they ran into a once-in-a-century storm. Remembering the original Muzan's lousy words, "The people I killed are no different from those who died in a natural disaster," the transmigrator thought:
Transmigrated Muzan: "...Damn, is this karma coming back to bite me?"
After they were rescued, the demons aboard the ship discovered they had arrived in the ancient Central Plains.
Transmigrated Muzan: "Well, at least we didn't die. Time's just gone back a few hundred years. No big deal."
When they finally returned, they discovered that not only had the Demon Slayer Corps followed them, but they had also spotted Yoriichi Tsugikuni through the eyes of the First Upper Rank.
Transmigrated Muzan: "...Did I really just see a ghost in broad daylight?"
Theme: If you grow rich and fail to return home, it's like wearing fine clothes in the dark
