Demon Slayer: Become a Pillar at the Beginning

The boy who originally lived in Blue Star accidentally traveled to the world of Demon Slayer because he stayed up all night. And the system joins in, starting on the road to slaying ghosts Yiwozuo: "How about you become a ghost too?" Wumei: "This man poses a greater threat to me than even the user of Rihu." This world is not only the original work, but also... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.