By night, teenager Yoshimori Sumimura is a kekkaishi--a demon-hunter who specializes in creating magical barriers around his prey. By day, Yoshimori's got other demons to battle: an addiction to sweets and a seriously crotchety grandfather! Yoshimori's pretty neighbor and childhood friend, Tokine Yukimura, is also a kekkaishi, but their families are feuding over who is the true practitioner of the art.

Who among our friends and enemies will sacrifice themselves--or others--to save the world from annihilation? What will be the ultimate fate of the child Chushinmaru, a "spirit reservoir" trapped alone for 400 years in the mystical site of Karasumori?

And what is the final destiny of Karasumori's faithful guardians, Yoshimori and Tokine...?!