The Seal of the Red Night

Summary

"HyeonRyeong" lives inbetween the world of the living and the world of the dead because his heart got switched with "Gwi-Ho". When HyeonRyeong's village is hit with a string of mysterious murders, a powerful and mysterious shaman-girl named "GabJin" shows up. When HyeonRyeong's demonization speeds up, he and GabJin set off on a journey to find Gwi-Ho, in order to turn him back into a human.