Moribito: Guardian of the Spirit (精霊の守り人, Seirei no Moribito?) is the first in the ten volume Guardian (守り人, Moribito?) series of Japanese fantasy novels, written by Nahoko Uehashi. It has since been adapted into numerous media, including radio, manga and anime adaptations. Scholastic released the first novel in English in June, 2008. Media Blasters has confirmed that they acquired the rights to the anime. The series premiered on Cartoon Network's Adult Swim programming block in the U.S. at 1:30 a.m. on August 24, 2008 EST. On November 7th 2008 it was moved back to 1:30e 12:30c time slot after being moved to the 5am eastern/4am central time.

Source: Wikipedia