A demon so evil that even Angels feared him... became the universe's greatest protector. --- David was never meant to be a hero. He was the Son of Willgase. The leader of the Red Demons. The monster who slaughtered thousands of Angels on the infamous "Angel Massacre Day." His name alone made the universe tremble. But something changed. 40,000 years later, David now leads the Devil Corporation - an organization that protects the weak, rescues the innocent, and fights the very creatures he once commanded. --- The Question Everyone Is Asking: "How does a demon born from pure evil become the universe's greatest savior?"