Demon Slayer: from Imp to Demon King

Reborn Demon Slayer: Kimetsu no Yaiba and became a ghost. "Successfully kill a ghost and obtain the blood ghost technique**!" "Successfully collect a memory and get ***" Nezuko: "Brother Ryoji, I will protect you." Butterfly Ninja: "Ryoji-kun is different from ordinary ghosts." Mitsuri Kanroji: "Brother Ryoji is so handsome! I want to rebel..." Zhu Shi: "I would like to follow Ryoji-kun and become Ryoji-kun's right-hand man." Not only have to deal with the Demon Slayer Squad but also the Ghost King, step by step to reach the position of the Ghost King! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.