MTL - Reborn with an Old Enemy on the Day of our Marriage - ~ 30. As you can see

She is an elder miss from a modern secret society family. She is very cold and heartless, but her appearance is very enchanting. She thinks of men as playthings. She was schemed against and her body was thrown into the sea.

The hero who was killed by the demon king ended up reincarnated as the son of the one who killed him! Thus began the life of the hero who donned in the mask of the ideal demon prince to topple his own kingdom while doing his best to prevent anyone from discovering his identity―― But to do that and blend into the demon tribe society, he had to kill his former comrades. Nevertheless, to become stronger, to save humanity, he had to walk through all kinds of paths of carnage! This is the tale of the demon race’s fake prince destroying his own kingdom.

O Hero, Trample Those Who You Should Protect!

TN: Most part of the other character in the novel is depicted from a non-human perspective so expect something that is completely different from the common sense of human.

Song Xingcheng found out that he was the cannon fodder for a novel…
The horror is, this is actually a post-apocalyptic novel?!
He relied on the rent of the two buildings to live a happy and free life, and his favorite grilled chicken…

But all of them will be gone!
Fortunately, the golden finger fell from the sky, and he became the lord of the city.

Since then, anywhere he had waved his hand had many houses, vast farmland, roaring factories, and rising technology…
Song Xingcheng not only once again lived a beautiful life of collecting rent and receiving soft hands but he also grabbed a man who can cook chicken!

***

He Qianshan: My skill of making grilled chicken is inherited from my ancestors, come to my bowl soon ~

- Description from Novelupdates

Yeho is a distant relative to a king in a small kingdom. Even though he is a distant relative, his house was very poor, and his mother was addicted to gambling. One day North Empire asked for Princess Sooyoung to be a concubine of an old Emperor because she was known for her beauty. But the king really loved his daughter so instead he ordered Yeho’s older sister to disguise as Princess Sooyoung and marry the old Emperor.

Yeho told his sister to run away with her lover, and his sister had to leave her younger brother alone with his mother. After she ran away, Yeho asked his mother to give the things back to the king that she got for trying to sell her daughter, but his mother already used the gifts to pay off her gambling debt. He was trying to give the gifts back to the king to take away his order, but now he can’t do that anymore. He tells his mother to run away, and he disguises as his sister to go to North Empire.

After he got there, he was trying to tell the Emperor the truth and take away his life, but the Emperor went out for few days to look around his empire. When the emperor came back, he wasn’t as old as he thought.