Yomi is a concept from Japanese mythology that refers to the underworld or the realm of the dead. It is often depicted as a dark, shadowy place where souls go after death. In this realm, the deceased are believed to reside until they are either forgotten or their spirits are honored through rituals. In the context of Shinto beliefs, Yomi is distinct from the heavenly realm of Takamagahara, where the gods live. The idea of Yomi emphasizes the importance of ancestral worship and the connection between the living and the dead in Japanese culture.