Kukuri Tachibana

A strange girl from the school who looks exactly like Kakeru's dead sister. She is one year older than Yuka and Kakeru. She has the ability to materialize her soul into the form of an angel that appears chained. She calls the angel "Abraxas". "Abraxas" attacks by sending out chains with sharp blades and has healing powers. She is the adopted daughter of the famous novelist in the area from whom she inherited her last name. She has no memories beyond five years ago, when she was 13, and seems to have lost her voice. She uses a sketchbook for communication.
(source: Wikipedia)