Synopsis: The Betrayed Hero Who Was Reincarnated as the Strongest Demon Lord

Fried and his pupil, Lyle, face off against the demon lord in a fierce battle. After a grueling fight, Fried emerges victorious and proclaims his intention to bring an end to the war. However, as he moves to deliver the final blow, Lyle betrays him with a surprise attack from behind. Despite the fatal strike, Fried awakens to find himself beside a demon girl who inexplicably refers to him as the demon lord. He soon learns that he has been reborn as the leader of the demon race and must now defend his people while battling against his former allies.