MTL - Supermarket Space: Traveling Through the Ages and Marrying a Rough Guy - Chapter 673 Song Can's Story 【43】

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

Pei Jin is a black bellied prince. To outsiders he is a kind gentleman and always calm.

Xu Feng transmigrated into the cultivation world with only one useless cheat.When he was born, the Golden Armored Spirit Turtle had just hatched, and according to the family tradition, it was bestowed upon him as his companion spiritual beast.Thinking that the Golden Armored Spirit Turtle had an extraordinary bloodline, he believed it would become a great companion in the future.However, to his surprise, it took twenty years for it to reach the Qi-Refining stage.So Xu Feng gave up all his expectations. He decided to keep nurturing it. If he failed, he could just pass it on to future generations.Unexpectedly...A colossal golden turtle, as vast as the entire world, lay across the shattered land.Looking at the devastated world, Xu Feng harshly tapped the head of the golden turtle.“Try to be more gentle next time!”

She was originally the king of the dark mercenary world, killing, plundering, and looking down on the world; once reborn, she became a powerful family that shocked the continent, the “Ninth Young Master of Waste” of the Beiting family;

From then on, the elegance of the world, shake hands;

Belonging to ancient monsters, possessing a magical space, practicing heaven-defying skills, killing the sky, killing the gods, and doing whatever they want;

Cool and handsome, domineering and arrogant, leading the world to compete;

In this article, the male and female protagonists are double C, male strong + female strong, and the ending is one-on-one;

- Description from novelbuddy