Who is mustafa in hanasakeru seishonen?

On hanasakeru seishonen, there is the first guy called Eugene, he has topaz eyes like mustafa and white hair, he seems soooo much like the leopard (mustafa) but he is so much crueler. It could be lee-leng but he doesn't look like mustafa. or is it no one. they say that the girl (forgot her name) trapped mustafa's spirit on earth and he took hold of someones body. or is it no one? Anyhow the question is, "Who is mustafa? What body is he in?" Please hurry and answer.