Demon Slayer Shion

When her fellow Demon Slayer, Ayano, disappears in the depths of an enormous dungeon, Shion and her friends take it upon themselves to find her.

After reports emerge of the disappearance of the greatest Demon Slayer, Ayano Senjuin, a search party is formed to investigate her whereabouts. Eventually, even the search party goes missing. Having learned of this, Shion Rokujou, a top-class Demon Slayer, hastily sets out on her own in search of Ayano and the search party. Will Shion be able to find Ayano and her comrades? Will she succumb to the same fate? And what kinds of foul creatures will Shion encounter in that extraordinary cave?