Tsuki ga Michibiku Isekai Douchuu - Chapter 70: Heroes Reunite

She, the prime minister’s daughter, was timid and cowardly. Because her engagement fell through, and her reputation was ruined, she was pressured to spill her own blood in the palace hall! Once again opening her eyes, the cowardice had vanished, replaced by coldness, causing others to be intimidated at first glance. Yet no one realized, she was not her.

When Kyran turned 18, his life turned upside down.

The Royal Army raided his clan because his supposedly non-existent magic got exposed. On that fateful night, he was the only one who escaped.

Up to the present, the status of his clan was unknown.

A magic inheritance that became a curse, Kyran became a fugitive. Always on the run... living in fear when the Royal Army finally captures him.

At least that's what most people thought...

“I'll definitely save my family. And I will make all those who made my clan suffer pay tenfold. I'll make use of this magic they so feared, and show them what real terror is....”

He rose from abjection and achieved eternity in glory.
He embraced the prettiest beauties and killed the strongest opponents.
He was able to shift the clouds into rain and cover the sky with one hand.
He could overrun the entire world and go anywhere as he pleased.
He pacified wars and held the world in awe.
He was matchless in the world.
However, his hair turned white overnight for his beloved woman and he was on the verge of death.
He was surrounded by enemies who were trying to take his life.
He struggled his way to become mighty and fought for everything he cherished.
For this age, he was the only king of the Dark World.
His name was a byword for might.
As a man living in the world, his only ideal was to pursue brilliance.

- Description from Novelupdates

As disaster was about to strike, a group of survivors transmigrated into a desolated world and were challenged to a game of survival. From terrifying acid rains, to endless natural disasters, the heavens burn while the earth scorches, radiation is rampant, and nobody is spared from the dangers of this hellscape. The only way one survives is by building a shelter and slowly upgrading it in hopes of surviving another day.