My Demon Slayer Seems a Little Different

Ye Tian dozed off in class and somehow ended up in the world of Demon Slayer, only to discover that something about this version of Demon Slayer seemed a little off.

It seemed he had arrived in the modern era, after the story had ended. Fortunately, he got a Super Sign-in Mission System and began living a life of luxury and indulgence. But two years later, he realized that the world seemed to have gained some things that should have been wiped out back in the Taisho era.