Conquer the World Starting from Demon Slayer

"Hey, only the strong don't have to bow to anyone, young man!" "I, Aizen, the Lord of the Seven Realms, the conqueror of the world of infinite reincarnation, will send you to the top of this world, invincible and invincible. Swear that your soul is loyal to me. From now on, your sister Nezuko will be protected by you! Take your own revenge and kill even the gods to show them! " When a ghost appeared in front of Hezhuo's son, it was like a devil's whisper, like a fraudulent contract, and Tanjiro Kamado's life changed forever! "Mr. Lan, why is the breathing method you taught me different from what the teacher taught me? It feels so powerful, but my body can't bear it..." Tanjiro, who killed the cannibal, turned around. "Mr. Lan?" "Tanjiro, your sister is getting cuter and cuter lately!" "... Please behave like a teacher!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.