In the Second Generation of the Trench, He Changed To the Ruanfan Script - Chapter 43:

The formless ancient world was infested with despicable demons. They hunted and feasted on mankind, keeping the human civilization constantly in a weak and suppressed state.

During the first known year, a magical mountain descended into the world from the realm of the Gods. Carved on this enormous mountain was a message: ‘Heaven Prevails’…

After the Grand Descent, a name that was given to the descending of the mountain, the Three Great Sages made their ways to Mystic Mountain where they learned to harvest what we now call magic, establishing the Mystic Cults and eighty-one sacred shrines to help aid mankind with the cult’s mystic powers against the eternal fight to the death with demons.

- Description from Novelupdates

Her birthday was marked as the day when her whole world flipped. She was rich, spoiled, and beautiful but all of it vanished when her cold body laid on the road, wrapped in her brother's arms. She thought it was her end but the young CEO finds herself at a loss when she wakes up in the body of Yu Mei Zhen, the illegitimate daughter of a rich family. She is married to one of her old university friends but he is no longer the gentle guy she once knew.

Enigmatic and wealthy, Jun Zixuan is the epitome of perfection. He has everything, including a suicidal and scheming wife whom he hates to the core until one day when she pours a glass of juice on him, her poison-laced words and countless insults following behind. That's where it starts. He could not take his eyes off his dumpling-like wife all of a sudden. Was he a masochist?

She decides to take one step at a time. Lose weight first, make money, get a divorce, settle the people who killed her unreasonably, and find a way to go back to her brother.

But wait...why is this cold and unapproachable husband acting like a white lotus?

...

“I want a divorce,” She indifferently said.

“Fine,” the man coldly responded without any shift in his expression.

One month later:

“When are we getting divorced?” She asked calmly, not wanting to deal with a moody husband anymore.

His gaze darkened, “The procedure is going on.”

Three months later:

“Jun Zixuan, where the heck is our divorce paper?!” She lost her patience and snapped at him.

One of his arms wrapped around her waist as he pulled her closer, “Are you that eager to leave me?” he asked, sadness flickered on his face despite that indifferent look.

“Uh-huh.”

“Oh, so sad~” The man narrowed his eyes, his lips tilted up in a crafty smile before he continued, “The lawyers said that our case is a complicated one, it might take them a lifetime to draft the divorce papers.”

And in the next second, his lips descended on hers shocking the hell out of her existence.

My name is Joo In-gong. The name that my parents gave me meant ‘protagonist’ of the world. Really?

Unable to control his mouth, Lin Jian Yin scared away eight previous girlfriends and six previous managers thanks to his poisonous words. Finally unable to stand it, he goes to a strange antique shop recommended by his friend. The shop supposedly has something that can help him.

Even though a Nintendo that plays cartridges is a bit outdated, and probably no one plays it anymore, isn’t it too exaggerated to place it in an antique shop to sell?

After returning home with a Nintendo, Lin Jian Yin inserts the cartridge that the owner sold to him at a huge discount. Only then does he discover that this is actually a simulation game. The female protagonist isn’t a cute loli, nor is she a mature woman. Rather, with her old lady hair and blue-white slippers, she is such a frightening woman that calling her a Taiwanese babe would seriously be insulting Taiwanese babes.

Gods! His mission is actually to help this woman marry a perfect prince! How is that possible!!!

Wait, as the main guy protagonist, Lin Jian Yin actually isn’t the prince. Then, then, who exactly is he… No, “what” exactly is he?