God Emperor - Chapter 2553 - Father and Son

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

Lin Yi transmigrated into the world of Xianxia and found himself bound with a Supreme Downloading System. For a man who could not be more ordinary, he began his trip to the pinnacle of life.

Chen Xi was a jinx who radiated misfortune the way a torch radiated light, and everyone around him knew it. His entire clan was annihilated when he was young, and not too long after that his parents disappeared. His marriage contract? Poof. Torn to shreds and gone up in smoke before the eyes of everyone in the city, almost humiliating his grandfather to the point of suicide! Cultivation? No time for that, he had a family to take care of!

This is the story of Chen Xi, a youth forced to stop cultivating and instead craft talismans to pay for his younger brother’s tuition… and who, in the process, would rise to become known by all as the Talisman Emperor!

After 2000 years has passed, the ruthless demon lord has just been reincarnated! But his aptitude at an academy for nurturing candidates for demon lords is, “Inept”!?

Having the capability to destroy humans, elementals, and gods, after a long period of countless wars and strife, Arnos the demon lord became sick and tired of all that and longed for a peaceful world, so he decided to reincarnate to the future.

However, what awaited him after his reincarnation is a world too used to peace that his descendants became too weak due to a huge weakening in magical powers.

Arnos enrolled in the Maou Academy established to find any students that might be the demon lord’s reincarnation, but his powers are too extraordinary that those in the academy couldn’t properly judge his powers, so he’s regarded as an “Inept student”. Being underestimated and avoided by most people there, he recruited a girl friendly to him, Misha, as his subordinate and comrade, and strives to climb to the top of the demon race hierarchy to one day reclaim his former title and status.