"The world we live in was carefully chosen for having no magic. Just completely mundane." He assumes Gren has told her something about the war, about why they live how they do.

"Right." He has no idea bout thin blood and swamps, but he turns his back to her. "Come on, I'll carry you back." The coat will help, but being pressed to his back may also help.

The biggest help is not something he's willing to risk right now.