A non-human thing that lives in the darkness — that which you will someday become. Mortally wounded trying to prevent what he thought was a mugging, Haru's life is saved by the vampire Akihito, with one small drawback; he is now a vampire too. The transformation takes time however, and while he adapts, Haru is vulnerable prey for other vampires. Akihito promises to keep him safe, and as Haru adjusts to his new circumstances, he also finds himself falling for the man who gave him a second chance at life...