500 years ago, Shinichi, the feared Demon Lord, ruled the world with unmatched power until his closest friend, Kael, betrayed him, plunging a blade into his back and shattering his trust. Choosing reincarnation over death, Shinichi awakens in a modern, tech-dominated world where demons are nothing but myths, and his once-legendary power has faded to a mere shadow of its former glory.
Reborn as a 27-year-old, Shinichi must navigate a world ruled by humans, corporate empires, and advanced technology. With only 10% of his original strength, he reunites with his loyal younger brother, Tatsu-now a high schooler amassing admirers of his own-and Aria, his fiercely devoted servant-turned-teacher, who has waited centuries for his return.
As Shinichi builds alliances, unintentionally attracts admirers, and begins piecing together the truth behind Kael's betrayal, he discovers a looming threat far greater than he could have imagined: an ancient entity known as "The Eternal" that seeks to erase both humans and demons from existence.
With a mix of romance, comedy, action, and betrayal, Demon Lord Reborn: Love, Betrayal, and a New World Order is a thrilling tale of second chances, trust, and reclaiming one's legacy in a world that no longer fears the Demon Lord-until now.