[Demon Slayer fan fiction + transmigration + System + not overpowered + every character gets their moment to shine]
“Welcome to the world of Demon Slayer. Because the dark side of your world invaded the Demon Slayer world first, Muzan has grown much more powerful!”
“You will be the protagonist who changes everything. We hope you’ll help the people of the Demon Slayer world return to the timeline that was originally meant for them.”
Cheng Minghui looks around. In this frozen, snow-covered world, Nezuko, dressed in ragged clothes, stands protectively in front of her pitiful older brother, Tanjiro, doing her best to look ready to pounce on Giyu at any moment.
