The official stage play adaptation of Koyoharu Gotoge's series Kimetsu no Yaiba. The time is Taisho, Japan. One day, Tanjiro, a kind-hearted boy who sells charcoal, has his entire family killed by a demon. Furthermore, his only surviving sister, Nezuko, has been transformed into a demon. Tanjiro is devastated by the hopeless reality, but decides to pursue the path of "demon hunting" in order to return his sister to a human and avenge the demon that killed his family. The sad story of brother and sister, woven together by humans and demons, begins now!

In the 15th century, Vlad III, king of Wallachia, was in deep despair after his beloved queen was killed in battle. He cursed God and vowed to live forever in the darkness to take revenge on the world. In the 19th century, Jonathan Harker, a novice lawyer, is asked by a Romanian aristocrat to help him buy a property in London. The aristocrat, who calls himself "Count Dracula," has an eerie aura about him, but also a mysterious charm that captures people's hearts. However, Harker soon learns that Count Dracula is actually a terrifying immortal vampire. After discovering the Count's true purpose, he and his friends rise up to stop it.