Katahane no Riku - Chapter 31.Whispers of the woman in white coat

The archaeologist “red-haired witch” made too big of a disturbance while excavating tombs, gloriously becoming a martyr in the midst of the grave chamber’s collapse. Seventeen years later, she had transmigrated into the Five Regions Continent. The delinquent Meng Fuyao who struggled to survive in the lowest rungs of society, cast aside her boyfriend who was about to marry another person with a slice of his five fingers.

No family, no power, no inheritance — a thrice-lacking protagonist. Just how will the seed rise up from the mud?

- Description from Novelupdates

He was the continent’s strongest and most revered alchemist, Ye Zifeng. He was under one person and above millions. However, due to an unpredictable event, he had died. After his rebirth, he had become the supertrash of the Ye family and suffered disgrace. To make matters worse, he had an argument with his fiancé that led to the break off of his engagement. In this second life, he will work to change his own destiny. He vows to return to the peak of the world, trample on those who laughed at him and rewrite his legacy!

Dale Mitchell, your average guy in a below-average job. But, what happens to him is anything but average. After hitting someone in his truck, his world was turned upside down, inside out, and more than fifty shades of grey.

Now, he seems to be something called a World Keeper, and must create and manage his own world. Is this his afterlife, or something else entirely?