I've never written one, but this is going to be a manga review, and what's more, it's an unfinished series - but it's so amazing I really can't help but write about it. It is a survival-themed josei manga in a post-apocalyptic setting, with a driving plotline and careful, thorough character-building, written and illustrated by Tamura Yumi.
This was the first time I thought a manga would be similarly engaging in a novel format, but this definitely would be, not because the art is awful, far from it, but because it has been ingeniously written, it's incredibly gripping and the characters definitely grow on you more and more - and I think this says a lot.
