It's about this random demon creature named Z who has befriended a human girl. But this human girl isn't really all that normal, she's 15 and has cancer. How is Z going to help her considering he's from the demon detention? Everything from there is really nothing but bad news. Z never really planned on helping a human with anything in the first place but now he has formed a friendship with her. So now what? There's not much else I can tell you unless you read it