It does not appear in the main text of Nihonshoki but Arufumi (alternative variants to the main text) of Section 6, Kamiumi (the birth of deities) describes that it was born when Izanagi (The Male Who Invites) and Izanami (The Female Who Invites) were starving and depressed.
日本書紀では本文には登場せず、神産みの第六の一書において、イザナギとイザナミが飢えて気力がないときに産まれたとしている。