Ninomae Ina'Nis's floating Book, and also her stream moderator. Short for Ancient Ones. Takes the form of a Tablet PC in her second outfit and a doujin in her seventh.
Her stream moderator is the same person as Enma-Chan [1].
Not to be confused with hololive DEV_IS ReGLOSS member Hiodoshi Ao, who is commonly nicknamed "Ao-kun".