Genius Manager: I Can Make All Girls Talented! - Chapter 83 - - Aurora Sterling, The New Member

Meet Jon Dare, your everyday's 25 years old whose life changes (ends) when he played the latest installment of Skyrim, "TESV Skyrim FDVR". He overloaded his game with all the mods he could fit together to the point of his brain getting fried. When he opened his eyes, he was in "Honorhall Orphanage" in the city of Riften. He was reincarnated in his favorite game 19 years before the start of the game’s events. Armed with future lore knowledge; full potential in Magic, Combat and Voice; Overpowered Parents and a Cat; the Nord kid will set out from Riften to find himself becoming a Hero way before the start of the game events.

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.

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

Kurono Maou is a high school student who is sensitive of his sharp eyes and bad expression. No girlfriend but gifted with friends in his own way, he had been living a peaceful life.