I found it pretty frustrating going. I like the idea that they're hiding secret letters for each other as they fight the "time war" but the war itself was so abstract and ridiculously coated in poetic license that I often was just annoyed at how the authors were trying to push forward on a rush of emotion instead of backing things up with a little stronger consensual reality. Maybe I rushed it? I dunno. Not my up of tea on the end at any rate.