many gods; many kami
Archaic term, primarily encountered in classical Japanese texts such as the Kojiki and Nihon Shoki. The number 八十 (eighty) is used figuratively to mean 'a great many'.
In the Kojiki, there is a scene where many gods appear.
From 八十 (eighty, figuratively 'many') + 神 (god, kami). The exact historical derivation is uncertain, but the term appears in early Japanese mythology.