MTL - They Regretted it After Their Hearts Turned to Ashes - Chapter 66 for example

Su Leyun, the legitimate daughter of the Hou family, was replaced by a peasant woman during a plague when she was still in her infancy.

After experiencing hardships in life for more than ten years, she finally returned to her parents, but she was plotted and framed at every turn. She was even looked down upon and treated coldly because she grew up in the countryside.

She originally thought that her sincerity would impress her husband and win him the gift of betrothal, but she didn’t know that he only married her for the sake of pretending to be a match.

After resurrecting her life, she vowed to make those who bullied her pay the price. She knew what it meant to be respected as a legitimate daughter!

- Description from novelbuddy

The universe gave me another chance after life screwed me over. My second life brought me to a world where people breath fire, walk on water and some people with special eyes that give them bullsh#t powers. Well, I got the gamer ability. And I’m gonna use it to stand at the peak. But it's gonna be a long journey before I reach that summit. SI - MC.

This is a time of great powers: The vast Persia, Sparta that was founded by force, Athens with its trade and business, Thebes the rising star, The ambitious Macedonia, The twin heroes of the Western Mediterranean, The rising Rome and so on.

This is an era of brilliant stars: Agesilaus II – the last king of Sparta, Epaminondas – the Rising General of Thebes, Philip II – the founder of Macedonian’s hegemon, Dionysius – the tyrant of Syracuse, Camillus – the Roman dictator and savior…

This is an era of contention among a hundred schools of thought: Plato – the great philosopher, Antisthenes – founder of cynicism, Pythagoras – school of number, Democritus – the encyclopedia scholar, Hippocrates – the father of western medicine, Aristophanes – the great dramatist…

What will the hero bring to the world when he comes to this age as a humble mercenary through rebirth?

Ashok Kumar Maurya, a hardcore gamer, is shocked to find himself transmigrated to the world of his recent Open-World game. But the real surprise comes when he discovers his new body isn't any of the familiar characters he once controlled.The owner of this body is some exiled noble named Adlet. An Extra. An UNKNOWN THIRD-RATE EXTRA.Ashok is greeted by the “System,” which reveals he was chosen for his perfect game ending. However, due to angering the God of Fate with vulgarities, he’s stuck with an insignificant body. As a result, the System gives him a quest from the God of Fate to preserve his life.[Main Quest: Achieve the Best Perfect Ending again.Reward for Success: Any wish, including returning to the previous world.Failure or Rejection: Death.]Just because a Quest is assigned to me, does that mean I must perform well in the role I'm given, that of a Third-rate Extra?With all the knowledge I possess, I refuse to settle for the role of a Third rate Extra, so I chose a new path for myself—the role of a VILLAIN. After all, playing the Hero would only end up in repeating what I did in the game, which is far too boring.However, to fully embrace this new role, I must rid myself of the old one. To do so, 'I sacrificed the System and original Adlet's soul to the HIDDEN FINAL BOSS, a beautiful Goddess.'…………….Follow the journey of Ashok, or the new Adlet, an unknown extra, into a true Villain. Armed with his knowledge of the game world, Ashok uses it as his weapon to overpower the original main characters and even challenge the Gods themselves, carving his path to power and domination with a loving goddess by his side.................>>>>HAREM: YES>>>>Detailed Plot: YES>>>> NTR: NO>>>> System: Sacrificed