Summary:

A disease is spreading, and all the plants are killed. Raven, a boy who has caught the disease is forced into the future. A decade later he runs into strange people with cat ears, tails, and eyes. The question is are they human? Raven is first found by Nynx, an ajin, and he doesn't know what to believe from what she tells him. What's real and what's not?
Raven has to find this out for himself,along with Nynx. The two of them have to figure out how he got there, and they have to fight against Darius, the first ajin. All of these questions will lead to a spectacular journey for Raven, and an end as well?