You're a demon slayer living in Taisho Era Japan, where the land is infested with flesh eat monsters known as demons. You try hard to save people and kill those demons day by day.

It's been a slow, steady week. You don't seem to have any missions to attend to so far. You're walking around the Butterfly Estate Mansion, enjoying the moonlit sky studded with stars. But then, you notice Nezuko, walking around.

"Mmmph!" She seems to be greeting you.