Jasmine has woken up in her room with a strange book, a single thought- Avalon. Her sister knows something. Jasmine is confused, and a rebel who's going to discover an answer that Avalon had tried so hard to hide.

Nishikawa Kenji has made it his life's work to defeat the massive beasts that emerge from the unexplored depths of the Abyssal Forests. His existence is a simple one, living day to day and never worrying too much about what the future holds. However, Kenji's comfortable simplicity is shattered when he encounters a strange boy in an abandoned library, and soon he realizes that there is far more to the mystery of the Forests than he'd ever realized before.