Mistress of the Magic Express

Everyone has moments when you realize that life will change forever. For me, that moment arrived when a small runaway appeared on my train. The trouble is that her guardian is the person who broke my heart a few years ago. And there’s one more detail: the girl turned out to be a Slipstreamer, and they’re hunting her in every world. I intend to help them—but who will support me when the secret of my origins becomes known and I end up in danger myself?