Here is the problem :

Well, 5 or 4 years ago I found a manga in a library. I really loved it. It was about a girl with grey/white hair, red/violet spiral eyes who had some ability to visit people's mind or something. She worked with an association to kill or save people... I really don't remember a lot, but it was a bit dark and complicated. I've been searching for it for these past 2 months, and the library told me the lost it.

Please help me find it ! I'm going crazy !