Seto Kamiki Jurai—better known as the Devil Princess of Jurai—is Ayeka and Sasami's grandmother, and she adopted Noike Kamiki Jurai as her own. When she's not busy running things, she likes to play matchmaker, which honestly tracks with her personality.
Here's the thing: according to Ayeka, Seto is actually more powerful than the Jurian Emperor himself, Azusa. That's a pretty wild claim, but nobody seems to dispute it.
Content compiled by AnimeList.moe from publicly available sources.
