Instant Death - Volume 4, Chapter 1: What sort of hobby is the extermination of the human race?

Office worker Leon is reincarnated into a particularly punishing dating sim video game, where women reign supreme and only beautiful men have a seat at the table. But Leon has a secret weapon: he remembers everything from his past life, which includes a complete playthrough of the very game in which he is now trapped. Watch Leon spark a revolution to change this new world in order to fulfill his ultimate desire…of living a quiet, easy life in the countryside!

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

The youngest daughter of the famous Sheng Family who has been lost for seventeen years has returned! Since she was brought up by a rural mute granny, many people think her life has been ruined and can’t wait to see how she disgraces the Sheng Family!

“That baby is mine, and so are you,” He declared, pointing at Kate’s belly while his deep green eyes gazed at Kate, like a viper ready to strike.Kate couldn’t believe that he– Henry Grant, her new boss eight years younger than her, was the father of her unborn child.“We should be together by default. But I will give you a choice. Go and suffer with your deadbeat husband, or come with me, I will show you the fun you’ve missed.”=====For the past five years of her marriage, Katherine “Kate” Woods, 32, had always believed she was infertile. She was unable to conceive a child and her deadbeat husband Matt always insulted her for it, calling her a useless woman despite never finding a job himself, forcing Kate to be the sole breadwinner of their family.Yet, he still had the nerve to cheat on her with her own sister!Heartbroken, Kate escaped to her office late at night with four bottles of strong red wine. To her surprise, she wasn’t alone.A handsome young man stood in her office, watching her.He refused to give her his name, but offered to keep her company for the night. With lust and booze coursing through her veins, Kate readily abandoned herself to her basest, most repressed instincts, seducing the nameless but willing visitor.In her drunken stupor, she boldly declared, ”If my husband wants to sleep with every woman on earth, then two can play that game.“She didn’t care if they did it raw, as she always thought she was barren. Only to find herself staring at a positive pregnancy test a month later.Kate Woods, the supposedly ‘barren woman,’ was pregnant.The stranger had accomplished in one night what Matt could not in five years.Now that Henry has given her a choice, would Kate leave her deadbeat husband and jump into the sea of uncertainty with this young man?Or would she stay with Matt, her husband who cheated on her for the sake of their families?