Primordial Dimensions - Chapter 144 - Unbreakable Miner

Oliver was a shy boy who always got nervous whenever he interacted with girls, which is why he had no girlfriend throughout high school.However, all that changes when his parents decide to help boost his confidence so that he doesn't have any problems interacting with people of the opposite gender in the future.But how do they do that?

SynopsisElian was once a healer—a rare one. His body fluids could cure any wound, and because of that, he was treated not as a person, but as a tool. Abused and violated by both men and women in his own guild, Flameborne, he endured unspeakable horrors in silence. In their final battle against the Demon Lord, they abandoned him like discarded trash.But death was not the end.The gods took pity. Reborn as Caelan Virelith and blessed by a goddess, he awakens in a new world with a powerful gift: the ability to form Essence Links—magical bonds forged through intimacy that unlock skills, power, and potential. Still a healer, but no longer powerless, Caelan begins his journey not only to grow stronger, but to hunt down those who broke him... and make them kneel.This time, he decides who gets saved.--Content Warning:This story contains mature themes, including sexual content, abuse, and revenge. It is intended for readers 18+ only. Reader discretion is advised.

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