How NOT to Summon a Demon Lord manga volume 8 features story by Yukiya Murasaki and art by Naoto Fukuda.

After witnessing Rem’s death at the hands of an insane Paladin, Klem, overcome with anger and hatred, has awakened as the Demon Lord Krebskulm. Meanwhile, an army of Fallen has surrounded Faltra. Can Diablo survive against the greatest threat the races have ever known? Will he be able to save Klem from the demon she’s become?