Tetsuya Kinoshita

In the year 298 of the Divine Era, elementary school girls Washio Sumi, Nogi Sonoko, and Minowa Gin are tasked with an important mission. They are to become heroes and fight Vertex, a mysterious enemy that is attacking Shinju-sama, the god tree that protects Shikoku, the only area in the world that is still habitable. What they don't know, is that this fight will cost them more than they could have ever imagined.

Kurumi’s heart was broken by the sudden death of her boyfriend in a tragic airplane accident. By melding futuristic technology with the binary equivalent of human emotion, a brilliant scientist created an ultra-lifelike robotic surrogate to take Hal’s place – and lure Kurumi from her shroud of solitude.

Based on the comic book series by Daichi Aozora.