Merciless Corruptor - Chapter 10: Goals To Look Out For. (Part 1~)

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

- Description from Novelupdates

After failing his college entrance exam, Li Yang had dropped out and started to support his first love. Yet after her graduation from university, she dumped him immediately.Now Li accidently takes other's chance to travel back to his high school years. With the exam answers remembered, Li decides to embark on a different path.

Damian, a Centurion of the Punishment Unit of the Baroque Kingdom. “Damn it.” Just once. If I were given just one more chance… ‘I would have truly conquered the battlefield with these guys.’ At the age of 30, he closed his eyes on a nameless battlefield. But when he opened them, he found himself back 17 years in the past. And this time, he had a perfectly functioning mana core that could wield magic. ‘This time.’ I will rise higher than anyone else. I won’t be swept away by the turbulent times. ‘I will conquer.’ Damian, who has returned to the past, wields his spear toward the world.

“You’re the moonlight that lights up the night’s darkness~