The world had already ended once, but 16 year old Jungkook is still determined to become a demon hunter to avenge the death of his father, vowing to dedicate his life to one single purpose: destroy every last demon in existence. But when war suddenly rages between the surviving humans, leaving his home covered in fire and blood, Jungkook quickly learns who the real monsters are—and they're looking for him.

David (OC) prides himself as the highest ranked Zenitheim player—a Fully Immersive Virtual Reality MMORPG with millions of people around the world—until one day when his title of Number One was suddenly taken by a new female player named Irene. But what will he do when he learns that the mysterious girl with the legendary sword and his school crush Bae Joohyun are the same person?