Setsuna Imawano

Setsuna Imawano (忌野 刹那, Imawano Setsuna) is the older sister of Shizuru Imawano who used to be very close with her. She was a genius of the Juugondō, which made her father, the head of the Juugondō, feel threatened. He tried to have her assassinated and used Shizuru as a hostage, and so she disappeared, leaving Shizuru distraught but safe. She turns up when her father comes to Tokyo, and kills him immediately with the other members in a coup, leaving her in control of the Juugondō. She later attacks the Agency and kills most of the agents, except for Kagura Tsuchimiya, Kensuke Nimura, Kyouko Mine and Kouji Iwahata.

Personality
Setsuna is an ruthless and ambitious young woman who is willing to kill Shizuru Imawano and subordinates.

Plot
During the fight in Lord Tamamo's garden she killed Kensuke; however, after using the power of the Kyuubi, Kagura Tsuchimiya revived him. During the cataclysmic event when the Kyuubi was came into being again, Setsuna lost an arm to protect Shizuru Imawano. She has disappeared from the hospital that Shizuru and Noriyuki Izuna have been tracking her down since then.

Powers & Abilities
Setsuna is a skilled fighter, able to easily toy with Kensuke Nimura. She has the "Eye of Satori," a telepathic ability that enables her to read minds. As a consequence, one of her eyes is remarkably different from the other.

She has a spirit beast, a water-using ogre-like creature called Suiko (水虎 lit. 'Water Tiger').

Etymology

 * The name Setsuna means "temple" (刹) (setsu) and "what?" (那) (na).
 * Setsuna's surname Imawano means "abomination, mourning, abhor, detestable, death anniversary" (忌) (imawa) and "field, wilderness" (野) (no).

Trivia

 * Setsuna's goal was to set the world into eternal war.