Demon Slayer: You can become stronger by swinging your sword

Novel Summary

No heroine + anime + passion + system + time travel Traveled to the world of Demon Slayer, and was accidentally bound to a system that requires drawing the sword 1 million times to become stronger... "Swing the sword + 1" "Swing the sword + 1" ... Many years later, A blood-red Nichirin sword was placed on Muzan's neck "Brother Muzan, the sun is so nice today, do you want to go out and bask in the sun together?" [Demon Slayer + Ghoul]

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