A throughly enjoyable sci-fi adventure story about two young people, and their travels to their home city after a war has broken out.
Highly recommended for those that like sci-fi, and who enjoy such shows as Star Wars which at least this part of the story is reminiscent of. The first two books (on which this is based) are also available here, under the names “Seikai: Crest of the Stars: V. 1” and V. 2.
Though avoid the ones that go by “Seikai Trilogy” as they are a derivative comic (manga), not novels.