The story starts out a bit slow, not explaining much about what is going on. It just tells of a young boy who has been sick most of his life suddenly gets sicker and his father looks desperately for help. His father comes home with another young boy from the mountains above who was beginning to/learned the "monk" ways, called Sora. Throughout the years of adolescence and teen years, Sora and Jungha's (the sick one) relationship is quite rocky. Jungha never seems to appreciate what Sora is doing for him (Sora kind of keeps the "illness" at bay for Jungha and takes on the burden himself) and Sora kind of becomes an outcast at school as well. But as Sora's fatigue gets more noticeable, Jungha starts to show that cares about Sora, something that Sora doesn't really believe in. Overlapping this whole story, are the powers of Sora, being able to see spirits, both bad and good, malignant spirit possession, and the theme of love vs. hatred. (there really is kind of a plot twist in the middle) ;)