MTL - Hail the King - ~ 1121, the most reasonable explanation

After an unexpected accident, An Luo was reborn as the young master of a business family. Even as his grandfather’s favored grandson, he seems to only be a cannon fodder in the brothers’ struggle to seize power. However, the most frightening thing is… the strange emotions that flicker in his little brother’s eyes as he looks at him. At that moment, overwhelmed by his brother, An Luo angrily thought: Could it be that he is doomed to never escape this vicious cycle of “brotherly love”?

An Luo(frowning): After rebirth, I don’t want to be together with some strange person.

Someone(suddenly appearing in the back, smiling): What did older brother just say?

An Luo: …Nothing.

- Description from Novelupdates

A top hacker was chosen by the Lord God to be reborn into countless worlds, always as an expendable villain.

With no free will, every world became a dead end. Every one of his lives ended tragically.

Finally, after wresting control of the Villain System, this ace hacker decided to enact revenge. Even if his very bones were rotten, he’d choose to occupy the very heights of morality, if only on the surface.

Thus, he would change his fate as an abused slag.

- Description from novelupdates

Time had run out. Azrael hadn't been chosen by the system, leaving him Forsaken with no hope for a prosperous life.But he wasn’t going to let it end like this. Even if it meant trading his life for a single chance, he would take it. It was either a life of greatness, one where he would reach the very top… or a short one, dying here, unmourned and forgotten by a cursed world that never cared he existed.“An early end in pursuit of greatness sounds better than a slightly longer one filled with stagnation and regret.”In the end, all the things he had done hadn’t been for naught. The sacrifices up until now had been worth it.[Inborn Trait activated][System devoured][Inborn Trait is fusing with the system][Devouring System has been granted]To his surprise, however, his system proved to be far more extraordinary than the others, granting him a unique path that only he could follow.With that realization, one thing became certain: no matter what monster or human stood in his way, he would reach the very top of the hierarchy, regardless of the cost.

The well-known and recognized throughout the Stern continent, strong and mighty, as well as the unique Wizard of magic cures, the most outstanding genius of the whole continent, Jason got into the flow of time, back in the uncivilized era during the first failed experiment, 3000 years ago. This was the period when the magic healers didn’t exist. How will Jason apply his knowledge in this backward era, wherever he reach the peak of glory?

- Description from Novelupdates