When I was younger a friend showed me this anime where I believe the entire cast was female. It was an action/fighting anime where all the characters had numbers associated with their rank. If I’m not mistaken I believe the main character was number 27 or 37. The only other thing I remember was the girl that was rank 7 got killed in a short scene in a blizzard. Sorry I know that’s obscure but I don’t remember a lot of it, I just remember that I found it very interesting. I haven’t been able to find it to this day and I’m sure I’m just looking over it and it’s right in front of my face. I’m not in contact with that childhood friend anymore so I can’t ask him. Thanks!