Pungjang-ui Sidae

Mok, a son of a Yangban, becomes seriously ill and finds out that he's being protected by four divine spirits and is also gifted with special abilities. After he is cured, he is able to see the world of spirits and ghosts. Fortunately, his new friend Han helps him in his new life between the worlds of humans and spirits, because with these new abilities, new adventures await him… (From: MU)