Deus found himself transported to an unknown forest when he went on a forest camp organized by his school. To confirm the strange situation that was befalling him, Deus tried to get out of the forest. While looking for a way out, he met a girl who seems to be injured. Deus approached the girl who later begged him to let her drink his blood. The girl later confessed that she is a vampire. As someone who had never heard of vampires before, he couldn't believe it but helped the girl anyway because he thought he needed information from her. Who would have thought that this was the beginning of a journey that would never end?