Everything Starts with the Death of Ghosts

On the New Year's Day of the 21st century, due to a sudden power outage, I slipped when I was going downstairs and fell down. I traveled to the Demon Slayer World, bound to the Bankai System, traveled through the worlds of the heavens, and completed a big mission. That's it anyway This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.