"I don't want to die, so I stopped being human." High school student Akira Tomose wakes up in a strange world after surviving a plane crash. He finds himself in a society where vampires with special abilities rule over humans, who in turn survive by providing their blood as sustenance for their protectors. Faced with this harsh reality, Akira decides to become a vampire himself, determined to endure a long, painful, and disgraceful life. In this grim survival fantasy, Akira fights against the suffocating despair of his new existence!