Reincarnated with the Country System - Chapter 23: Ruler of Sea Monsters

His legendary class is The Husband Of Deathwill Sisters!

While other players went through common quests to get their classes, Alex started by getting a legendary class: Husband Of Deathwill Sisters! He got three beautiful wives from the start and the legendary castle!
What would his girlfriend and friends say about this once he reveals his class to them?
And what about Deathwill Sisters? What is their plight, and why would they suddenly get a husband?

[Congratulations! The system will guide you to find a handsome and kind husband in the apocalypse!]After being killed by the demon king, the demon queen had a second chance to live in the body of a woman in the apocalyptic world, Medeia Vega.Their planet has apparently been hit by cosmic radiation, causing living things to mutate and develop unique abilities.People with weak mental states couldn't keep their humanity and turned into monsters, while the survivors had to fight those monsters endlessly to stay alive.Her main mission in that world was to find a kind-hearted husband, but it just so happened that Medeia also built a safe haven for people.Would she be able to find the man of her dreams in the apocalypse?————[Before dating a kind hearted man, you should also have a pure heart!]“Fuck.”[Foul language detected! Penalty minus 20 points!]“Damn you—”[Foul language detected! Penalty minus 30 points!]“You shitty system, how dare you keep reducing my point?! I hope you rot in hell, you bastard!”[Foul language detected! Bad curse detected! Penalty minus 100 points!!!]

Xiao Yu was humanity’s greatest genius, a scientist whose intellect surpassed all others. He saw the signs of Earth’s impending doom a decade before it happened, warning the world of the catastrophe to come. But instead of being hailed as a savior, he was ridiculed, dismissed as a madman by his peers, and ignored by society.Realizing that nothing could change humanity’s fate, Xiao Yu made a decision. He turned his brilliance toward survival. Using knowledge decades ahead of human science, he constructed the first true interstellar battleship—not for humanity, but for himself. And when the end came, he did what no one else could. He abandoned his mortal body, fusing his very soul with the ship’s central computer and escaping into the endless void.Now, drifting through the vast and indifferent cosmos, he is the last remnant of a dead civilization. But he refuses to let humanity vanish without a trace. Why was Earth destroyed? Was it truly unavoidable, or was there something more sinister at play? To uncover the truth, he must push beyond the limits of human science. His battleship is just the beginning. Through relentless technological advancement, he will evolve, forging a warship that can traverse the stars, a fleet that can reclaim humanity’s lost legacy.The universe is vast, filled with unknown civilizations, ancient mysteries, and dangers beyond imagination. But Xiao Yu will not stop. He will find answers. He will ensure humanity’s flame is not extinguished.The journey into the unknown begins now.

The most successful businessman of his time, who started from being a homeless orphan, died indignantly because of being plotted against by his most trusted aid, his own brother.