愛弟子に裏切られて死んだおっさん勇者、史上最強の魔王として生き返る

Discover the epic tale of 'Manadeshi ni Uragira Rete Shinda Ossan Yūsha, Shijō Saikyō no Maō to Shite Ikikaeru,' where a once revered hero named Freed faces a tragic demise orchestrated by his own disciple. Resurrected as the fearsome demon lord, Freed confronts a looming threat as heroes converge on his demon castle. Alongside a loyal demon girl and their allies, Freed must navigate betrayal, power struggles, and a burgeoning harem in a world on the brink of destruction. Dive into this captivating Japanese web novel filled with supernatural elements, showcasing the transformation of a former hero into the ultimate antihero protagonist.