Tenku no Arcamiles

is a Japanese light novel series written by En Mikami, with illustrations by Jun Keiichi. The series began publication on April 10, 2006 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Behind the prosperous human civilization, the dark genus that was supposed to be quietly buried in history-the "beast". But the "warfare" brought by someone changed their destiny. There was no way for humankind to do it in front of Terion, who regained his original power and instinct and became a hunter again. Takuya Shinomiya is an ordinary high school student who attends a private Todo school with Reina who grew up like a brother and sister. However, from the time he was fascinated by the transfer student, Kuji Hinako, his daily life collapsed. The shadow of the terion jumping into the city, Hinako who is chasing the terion. And when Takuya and Reina regain their lost childhood memories, the wheel of fortune begins to turn! The first in the action horror series.