MTL - My Chief Husband, Too Mensao! - Chapter 3999 Mysterious visitor

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

In his previous life, the MC was a total degenerate—lazy, self-indulgent, and only skilled at gaming and skipping responsibilities. One day, he dies in a ironic accident.He wakes up in a magical world, reincarnated as Eryndor Sylvaren, the youngest prince of the Ethereal Elven Empire. The elves are a proud and noble race, and their royal family is bound by strict traditions of honor, discipline, and responsibility—none of which the MC has any experience with.Luckily, he receives the “Divine System of Degenerate Growth,” a system tailored to his flawed personality. He makes the same mistake of repeating his past life only to realise that this new life has so much in store for him. Mistakes have consequences for power.NOTE: This book is a slow paced action adventure story that explores a vast fantasy world. If you like weak to strong, harem growth, high stakes, dungeons and adventurers,with a compelling storyline you should give it a try.

If you had the chance to go back a few years, relive your life, and rewrite your story—armed with a mysterious system designed to help you achieve your dreams—what would you do?This is the tale of Park Adan, a boy who met a tragic and humiliating end, crushed by a falling billboard on his way home. But fate wasn’t done with him yet.Adan wakes up in his bed, three years in the past, with a second chance to change everything. And this time, he’s not alone. With a system to guide him, his journey to rewrite his life begins—filled with challenges, opportunities, and a quest for redemption.Will he succeed in shaping the future he desires, or will the past catch up with him again?

My past life: Ordinary. Mediocre.