Writer and Artist: Kou Yaginuma
For her first test upon arriving at the school, Asumi is locked into a barren dorm room with two other girls for several days, tasked with building an enormous domino run. If they give up, they're out of the program. It is also apparent that they are being observed via video camera, presumably to assess their interactions. Of course, one of the girls is easy to get along with, the other not so much.
With the female protagonist and the fantasy elements, this is an obvious choice to pass on to my ten-year-old daughter at some point but I think I'll wait a little while. The language is occasionally on the mature side. It's classified by the publishers as seinen, meaning it's aimed at younger men, approximately 17-40. I think Our Girl will be okay with it long before she's 17, though.
Volume 1 includes the first four issues of the manga series plus two prequel stories. In Japan, the story has spawned two television series: one animated, one live-action. There are 12 English-language volumes in all. With strong characters and compelling storytelling, this one's looking like a long-term winner for me.