Kiss Goodnight, Mr.Ji - 1604 Love in a mysterious way

I’ve become a rogue lord in another world! This is the story of a game I was playing! The story of the protagonist, who has become a rogue lord who dies after two days, successfully uses the game’s history and system to escape his impending doom and become the strongest.

Sam Sanderson is envied by many for his job, however he himself didn't seem to like it much.

Due to his expertise in nanotechnology he was tasked with monitoring the state the Valkyries, humanity's strongest weapons who all just happen to be made into gorgeous females.

Forbidden from even touching any of them, Sam spends his days in agony watching flowers he couldn't hope to touch. However one day all of that seemed to change.

[Mature Content.]

“I’ll always be by your side, next to you, on top of you, behind you... The choice is yours to make.”

An immortal who has lived a millennium...

He went by many names, many lives, many titles, but one stuck with him the most...

Kaden. One look and you'd think you've met the devil. Dangerous, devious, and indifferent, people always bowed their heads to him—except for the woman that brought the tyrant to his knees.

A woman with a special ability and curse...

Lina. She was cursed with clairvoyance—the ability to see a person's close or far future. When most don't remember their childhood, Lina remembered her first life. Since birth, she had repeated nightmares about a man who supposedly died. 1000 years after his death, Lina sees him again, and he wants everything to do with her.

Unfortunately, there's nowhere in this world she could go that he couldn't find her. What'd happen to the frightened Lina and the devious Kaden?

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Warning:

Strong sexual content.

A young man with an extraordinary mind is off on an exciting adventure when he mysteriously wakes up in the body of a feeble slave-guy in a different, rich in quirks world.

The main character, a selfish jerk, would use extreme means to achieve his goals. However, he never allows his base instincts to overrule his sense of decency. He always pays back both good and bad deeds.

Will his (terrible/excellent) mentality help him make a fresh start? Will he get through misfortunes and hardships of the new world?