Yachiyo Runami

Artificial intelligence, the creator of the Tsukuyomi virtual space. Streamer and singer. She holds concerts every night with live broadcasts throughout the virtual world.

Yachiyo is Kaguya, who, after hearing Iroha's song, brought back memories of her time on Earth. She wanted to fly back, but the spaceship collided with an asteroid and crashed into the sea. There was only enough energy to plant the Inudoge consciousness in the Fushi clam and interact with the world through it. Eight thousand years later, technology had developed enough for Kaguya to transfer her consciousness to the virtual world. So she became Yachiyo.

Since Yachiyo is able to create clones, she was able to transplant a copy of her consciousness into a robotic body designed by Iroha. Now Yachiyo lives in a virtual world, and Kaguya lives in a real one.