Kimetsu no Yaiba: The Modern Era

If you have not finished reading the manga please don't read this, you will get spoiled
In the modern era, people in Tokyo think that they are safe because the demon king, Kibutsuji Muzan had died centuries ago. But there is a group of unknown people are doing research and experiments , trying to recreate him.
On the other hand Kamado Sumihiko, a great grandchild of our beloved character, Kamado Tanjiro has weird and bad dreams?
What is going on?
Find out more by reading the story.