The manga that I am looking for is about a girl who for some reason goes to this assassin or mercenary. But she goes to his place to ask for help and a man and woman show up and I think push her out of the way so they can try to hire the guy to help them but they say something that he doesn't like. So he pushes a button and makes them fall into a nail pit. The girl does get his help I also remember that in this manga that the assassin does cross dress sometimes. Well thats really all I remember about this manga so if you can help me figure out the name of this manga then thankx a lot.

I'm pretty sure it's White Dragon. I'm still not sure why but i really liket it even if the story was quite simple.

That's the one I was looking for.