Manga recommendation: Kamisama no Iutoori Ni
Starts at the same time as the prequel but it follows the survival story of new characters, the ones who didn't go to school at the first day, who face different challenges than those in the prequel.
Prequel: Kamisama no Iutoori
Chapters: 107 (ongoing)
Genre: Action, Horror, Shounen, Supernatural
Story: Muneyuki Kaneshiro
Art: Akeji Fujimura