So today this anima I saw a few years back just popped into my head. I can't remember the name and its driving me crazy.
It takes place in some kind of building maybe a tower, Its surrendered by cop or the military while the hero fights his way up. I think the hero has these diamond shape thing on his wrist or hands. On his way up he runs in to the sister of a perverse bad guy he kill. She start a fight and for some reason the hero won't fight her. She beats him to an inch of his life when he tells her something. This make her stop and she join him to save the world.
That's all I remember so if anyone knows the name please let me know. Please and thanks