MTL - My Items Have an Upgrade Panel - Chapter 326 Communication and Verification

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

(Non-system, multiple female MCs, both good and evil)Fang Ling, who possesses the Chaos Sacred Body, was fiercely fought over by various forces since his birth. His heart, right eye, and treasured bone were successively taken away...After many twists and turns, the critically ill Fang Ling was placed in front of an ancient temple by a kind-hearted person. No one knew that within this ancient temple, five unparalleled masters were in seclusion. They had been hiding there for tens of thousands of years, suppressing the Immortal Heart of the Demon Ancestor.When the Immortal Heart erupted, the five masters were unable to contain it and took a desperate risk by implanting it into the infant's body. The fusion of the incomplete Sacred Body and the Immortal Heart led to the birth of a peerless monster...

[Mature Content]“The brightest light casts the darkest shadow”Eirin lived her life in the shadows of her precious friend, but she soon fell into deep chaos after she stumbled upon a humanoid that tried to take her life without an ounce of hesitation. She was saved by a group of people who wielded unknown abilities, and the moment she woke up, it all felt like a nightmare.Just when she thought she had escaped death, the people who saved her are now the ones after her life. Misfortunes started going her way, and creatures unknown to her appeared one by one, taking the most precious person away from her and leaving Eirin in despair.Secrets started unfolding, and the monster Eirin sought for so long was not the one she expected them to be.

Born naturally defective but possessed by the spirit of a divine dragon. Inheriting the divine dragon’s will and power, growing scales and magical claws, imperial waters containing the breath of the dragon, travelling through clouds and summoning rain, an invincible physical body. In this world and era, countless men dream of slaying dragons. Li Mu Yang has always lived a hard life.

- Description from Novelupdates