She is never actually seen in the series, other than as a shadowy silhouette behind a paper screen that is always spinning thread in her room. She occasionally notifies Ai when a new client beeps on the computer and advises her, occasionally commenting on the cases she takes up. She doesn't talk to anyone except Ai, although in an episode in season one, she made the exception of talking to Shibata Hajime. A single human eyewitness in Futakomori who had observed Ai's grandmother ran in terror, implying that her appearance may be other than human. During the final episode of Futakomori she stops spinning threads for the first time and thanks Ai's three assistants for everything they have done. Ai's Grandmother doesn't appear in the third season until episode 14. That is due to the fact that neither of Ai's companions reside in the realm of Eternal Twilight anymore, and until that episode, instead of the usual ritualistic bathing and the grandma preparing Ai's nagajuban, Ai simply took over Yuzuki's body and appeared already dressed.