Coauthors Souki Tsukishima and Tora Tsukishima have served as writers for many epic games, anime, and novels, including Square Enix's Final Fantasy Type-0 -The Last Truth-, Imaginary Range, Root Double -Before Crime * After Days-, and Netflix's Ingress: the Animation. Their debut work, emeth: Island of Golems, was the Grand Prize Winner of the 3rd Square Enix Novels' Award.