Vivana Oniguma

Vivana Oniguma (ヴィヴァーナ＝オニグマ) is a character introduced in Souyaku Toaru Majutsu no Index. She is a dark side researcher.

Appearance
Vivana has long white hair and pink eyes. She wears a priestess like uniform.

Post-Handcuffs Arc
Vivana was referred to numerous times post-mortem by various individuals on December 29th, during events in the aftermath of Operation Handcuffs, including the escape of surviving prisoners following the Overhunting crash and the conflict in the Vanishing Tunnel surrounding the captive Risako, whom Vivana had saved at the ultimate cost of her life and whose feelings the ghost of Kihara Hasuu sought to manipulate for his own ends. Having witnessed the events of Operation Handcuffs and Vivana's role in them, Kazakiri Hyouka used her yarai to finish off Kihara Hasuu's ghost, dealing the final blow to the lingering evil in her place.