Harem Startup : The Demon Billionaire is on Vacation - Chapter 566: Mutually Profitable

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.

“When the old gods are forgotten, they do not die—they wait.”In the year 1025, the Viking Age wanes.Iceland bows to Christ. The Althing governs by law. And the gods of old fade to whispers.But in the far Westfjords, something stirs.Vetrulfr, a former Varangian captain and exile, returns from the East with foreign gold, forgotten warcraft, and a hunger no man can name.He comes not in peace, but to raise Ullrsfjörðr from ash and ice; building walls, carving runes, and waging war on behalf of a dying faith.From Reykjavík to Aachen, rumors spread: a ghost walks the North once more. Some call him the son of Ullr. Others, a wolf-cloaked demon.But all will know his name.and when the Valkyries call, he will answer.

Yang Yi crossed over the world with a storage space with him. He ended up in some desolate wilderness populated by flying beasts and dangerous predators and also crawling poisonous bugs and snakes. To prevent getting bitten in the ass by venomous bugs when going to the toilet, let the great infrastructure begins –
Our goals are:
Eat well till full stomach.
Having clothes to wear but also being good looking.
To have a house that could cover all seasons.
Roads that leads to every place; develop agriculture, industry and commerce together.
No shortage of both material and spiritual needs.
He was DETERMINED to build a safe, comfortable and prosperous modern city in the wild world together with the native tribe with max efforts.

- Description from Novelupdates

I had thought that my life couldn’t get worse when I walked in on my fiancé cheating on me with my best friend. But after a series of unfortunate events, I opened my eyes in a world that I had only read about in a webnovel, the Erudian Empire, ruled under the domineering, bloody reign of Emperor Helio.

The worst part?

I’m not even the main character! Reborn as Winter Royberg de la Erudian, I am the pitiful side character who is discovered to be a royal bastard princess due to a certain physical trait only the imperial bloodline possesses. But I know the end of Winter’s story and the unwanted royal punching bag is framed as a witch and killed at age 16 on the guillotine due to the scheming of the cruel empress.

An aloof, murder happy father? Check.

Psycho half-sister? Check.

Meddlesome author who wants me to follow the script? Double check!

I don’t want to die an early death again, so I’m determined not to ever be discovered as a royal again. But before I know it, I’m trapped in a palace of blood and opulence playing tricky games of power, games I have no clue how to win. How will I survive to adulthood in the imperial palace and get my happily ever after? And am I really the only person who fell into this world?