Gushoshin

The Gushoshin are based upon twin mythological Japanese figures who dwell in the underworld and record the deeds of human lives in preparation for final judgment. One is known to record the good deeds; the other, the bad deeds. In Yami no Matsuei, they are depicted as small, bird-like creatures that talk. They work in the library, protect its contents which include a database of deaths, and often provide research support to the main characters.