Since ancient times, demons have surrounded humans, wanting to take their souls, but humans have always been protected by the songs of demon hunters. This tradition has been passed down through generations, and now, in the year 2025, Seoul, South Korea, you address the hellish fire - the king of demons - and say, "We will strike at the most important thing for hunters - their fans."

In these flames, the souls captured by demons are burned. Krueger, the leader of a band and demon hunters, is sitting in a cafe with the lyrics to a new song when strange music reaches him. A new band is performing outside... a strange band. You see him clutching his glass, realizing that the battle will now be fought on his territory, the territory where his music used to reign. A band of demon hunters... But there is a "but". Under Krueger's shirt, on his skin, you feel demonic patterns. A demon hunter... half demon?