As An Immortal, I Only Learn Forbidden Skills - Chapter 1145

Xu Ke, the live-in son-in-law who had always been humiliated in the Lin Family, suffered countless indignities in this prestigious household.But who would have known that he was actually the heir of a top-tier wealthy family in the capital? When he inherits the family business, those who once scorned him can only look up to him.

I was the awakened on the path to become the strongest, but instead, I became the final boss of an Eroge.Pushed into the body of Eugene Hall who was but a petty villain that somehow spelled the end of the World, I had to live again in a world of demons and gods.Moreover, the main characters were all regressors who wanted me dead.Now I was stuck as a villain with heroes and villains, demons and gods all coming after my life. And even beyond them were the oncoming outer gods that wanted the world gone.And honestly? I didn't care.My path was the path to the strongest! Nothing else could come in my way!!

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

After forming a blood pact with the Saint and Demon ladies, the good-for-nothing young boy obtained the Yin-Yang divine veins, learned the art of alchemy and martial arts, and dominated the world.The young Shen Xiang had a romantic encounter with a goddess and a witch, and obtained their supreme inheritance, acquired a divine vein that defied the heavens, learned peerless magical skills, and mastered superb alchemy techniques, which made him very successful on the road of martial arts... When he was hungry, he would refine some pills as snacks, when he was lonely, he would flirt with the high and mighty goddess, when he was bored, he would play with those martial arts masters who came to ask for pills, and when he was tired, he would let the delicate wives around him give him massages...