Ok. I am looking for this specific title. A girl witness her parents killed by some guys and manage to hide away. She was found by one of the guys, but he spared her and gave her a small piece of jewelry ( I am not sure whether he gave it to her or she saw and remember it but there was some kind of token for recognition there).

After that, the girl grows up and they meet again. I don't remember whatever happens after that, unfortunately.

I hope this is enough for u to help me find it

Shion no Ou?

U dòn thinh so. The one I Read was more of a shoujo and the " killer guy" saw her directly and chose to ignore her. They meet and recognize each other ( and probably would fall in love) pretty soon.

I think it's the first story in Mask - Kamen no Jouji http://www.mangaupdates.com/series.html?id=35350

Oh, thank u. I think this is the one. Though I gave a very strange version of the story =))