Leader of the Sea's Talons. Cold and sadistic, this pirate doesn't hesitate to torture her prisoners if it means keeping them under her control. Mihaya reveals that his father and brother have relations to the Sea's Talons and with that information leads Zen and his group to the Talon's hiding place.
Supporting character in Karakuri no Kimi.
Sei's older sister whom Sei greatly respects. Kotaro commented that both Sei and her do not like to talk much. The Princess has lived for a very long time and is also a descendant of the chaotic bloodline. She resides in the Sacred Precinct with Crow, where Jiro and Kotaro previously stayed at. She was sad to see him go, so Kotaro consoled her by saying he will write to her when he reaches the Special Zone. Despite her quiet demeanor, she apparently has a short temper and while she enjoys Kotaro's company, if Kotaro does something that angers her, the Dark Princess does not hesitate to hurt him. Her powers are great enough to warp and change the very weather surrounding her. -wikipedia
The Will of the Whole Misaka Network, abbreviated as the The Whole (�体 S�tai) in the original text, is a character introduced in Shinyaku Toaru Majutsu no Index. She is a single organic system, a thought entity, created from the gathering and consciousness and egos of 20,001 Sisters. A non-corporeal character, she possess other Sisters in order to give out timely advice to the protagonists in times of need. (Source: Toaru Majutsu no Index Wiki)