Concubines Lead to Strength: The Path to Immortality Begins with Taking a Spouse - Chapter 52 - : Imported Elixir, Sudden Enlightenment! (Seeking Followers, Monthly Passes)

Mo Chou is the no.1 ranking female assassin in an illusive organization. One day on the way to the organization after completing a mission, she dies. She is shocked when reincarnates into her favorite novel but as a villainess who is the protagonist's step sister and dies a miserable death. She just wants to live a cushy and comfortable life so she decides to completely avoid the red flags aka the main characters and live like a saint (well a saint who is an assassin) But why does she keep stumbling into the main characters especially that infuriating villain and why the heck are they clinging onto her?

She, a hidden technology boss, is obsessed with blood and kinship. She died tragically in a previous life and has a new life. She just wants to protect her true relatives!

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?? He, the Emperor of Dark Night, glanced at her inadvertently and caught a glimpse of her stubborn appearance with tears in the corners of her eyes. Since then, he has embarked on the road of pampering the girl, and he will never return!

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But who knows, the Jiaojiao girl in her arms is a real all-around boss.

The boss of the world’s No. 1 chaebol: “Is there any order for Miss An? The little one is willing to help Miss An.”

Dean of the Global Research Institute: “Miss An, I heard that you like the sea, I bought ten islands for you…”

The world’s number one hacker: “What? Someone bullied my boss? Hehe, courting death!”

The world’s first medical doctor: “Miss An, do I have the honor to come to your twentieth birthday party?”

…

When luxury cars came to the capital and the big guys lined up to greet the girls of the An family, the world shook, and the whole world was shocked!

- Description from novelbuddy

There was once a hero.

Unique black hair. Excellent eyes. Contrary to his delicate features, he who had abnormal strength was called the Otherworldy Hero.

At the hero’s long adventure (up to the point where his wooden sword that had been kindly granted to him by the king was replaced by the holy sword blessed by the holy maiden) he saved the prince that had been kidnapped by the demon king, and so the kingdom was swept by worry.

The hero’s strength that could fell the demon king was deemed too dangerous to leave unrestrained.

One advisor spoke up. Why not marry him to royalty?

The king thought that was a viable option. Family, to an alien from another world would be the best of chains. There was one problem. The king was abundantly blessed with sons and had princes galore, but not a single daughter.

Ho, and it wasn’t like I could marry off two boys.

At a burst of inspiration the king slapped his knee.

That was it!

You just had to turn a prince into a princess!

And so the hero ended up in a position to be marrying a man.

This story, is a tale of the aforementioned otherworldly hero, and his bride, the former-prince-now-princess and their ridiculously hilarious marriage.