How NOT to Summon a Demon Lord (Manga) Vol. 6 (Paperback)
DEMON LORD VS. DEMON LORD All her life, Rem has carried the soul of the demon lord Krebskulm inside of her, terrified of letting such an evil loose on the world. But now a mysterious Fallen has told Diablo, Rem, and Shera about a ritual that could free Rem. The catch is that it means letting Krebskulm free as well... Can Diablo, a fake demon lord from the ordinary world, take on the real deal?!
Yukiya Murasaki is a Japanese author best known for the How NOT to Summon a Demon Lord light novels. Naoto Fukuda is a Japanese manga artist best known for the manga adaptation of How NOT to Summon a Demon Lord.