"Madlax" also plays as the story of Margaret Burton's search for her psychological identity. Based on the Mashimo Menu theme titles available to her, Yuki Kajiura has suggested an interpretation that while searching for her memories, Margaret meets the other characters ("Gatekeepers") one after another and learns about the lifestyles ("Gates") they represent. In the end, she finds her own "Gate", which is the new identity that finally replaces the one she lost twelve years ago.