Kotori Itsuka

FanArt from Date A Live character

Date A Live (デート・ア・ライブ) is a Japanese light novel series written by Kōshi Tachibana and illustrated by Tsunako. It will be adapted into an anime television series in 2013

Kotori Itsuka (五河 琴里 Itsuka Kotori)
Voiced by: Ayana Taketatsu
Shidou's foster sister who was a human that gained the power of Spirit who was apparently saved by Shidou 5 Years prior to the start of the main story. Her Angel is Camael, a battleaxe that is capable of changing shape to a cannon that extends to her right elbow. Her destructive tendencies increase when using Camael. She takes back her powers from Shidou in Volume 4 to save him from Kurumi and her power was sealed by Shidou once more.