愛弟子・ライルとともに魔王の元に辿り着いた勇者・フリードは、死闘の末に魔王ユリーシャを追い詰める！ いよいよ止めを刺そうとした時、ライルの裏切りにより命を落としてしまう――。
が、死んだはずのフリードは、直後に目を覚ます。すると目の前に一人の少女が現れ、告げる。
「お目覚めですか、魔王様」。
こうしてなぜか新たな魔王として甦ってしまったフリードは、配下の魔族たちを救うため勇者たちとの戦いに身を投じることに!?
The hero, Fried, confronts the demon lord with his student, Lyle. Fried killed the demon lord after a ferocious battle. “I’m going to put an end to this war!” Just as he was about to finish off the demon lord, he is betrayed by his student who attacked from behind. Fried, who was supposed to be dead, wakes up next to a demon girl who calls him the demon lord for some reason. It seems that Fried has risen as the new demon lord and will now have to protect the demonkind under his command while fighting his former comrades
