The AI administrator of the virtual world Tsukuyomi who assists Kaguya and Iroha in the streamer tournament. She is later revealed to be Kaguya's future self, who time-traveled 8,000 years ago and uploaded her consciousness into the platform.
Yachiyo guides Iroha through Tsukuyomi's mechanics and supports her streaming career.
Explore the full interactive character relationship map of Cosmic Princess Kaguya!