A/N

The young and most feared assassin, Fuyu Mizuki, is the first thing you'll hear when you enter a mafia, assassins and 'bad people'. No one actually seen her bare face because of the kitsune mask that hides her face. However, the red hues under it is noticable.

But what will happen if she got transported at the world where demons exist? Will she survive?

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I do not own Kimetsu no Yaiba nor it's characters, it's all belong to Koyoharu Gotouge. Though, I own my OC/s