Goinkyo Maou-sama no Kaerizaki

Without warning, a sudden bolt of lightning strikes an unassuming old man, seemingly ending his quiet life. However, instead of death, the strike triggers an impossible miracle. The elderly figure is entirely rejuvenated, transforming back into a strikingly handsome man in the absolute prime of his life. This extraordinary individual is Gigi Alegarcia, a name long whispered with reverence and fear throughout history. He was once celebrated as the previous generation’s Demon Lord, earning legendary titles such as "stronger than the strongest" and "the man blessed with everything but magic." Despite lacking magical abilities, his overwhelming power defined an entire era. Now unexpectedly restored to his youthful peak, Gigi faces a world that has long since moved on without him. Stripped of his aged obscurity and thrust back into the formidable physique of a legendary ruler, he must navigate what it means to return from retirement. With his unparalleled strength fully revived, the former Demon Lord stands ready to step back onto the stage of a world entirely unprepared for his resurgence.