Apocalypse Shelter System - Chapter 19: The Rules of City of Darkness?

Raon’s entire life had been lived as a dog on a leash.

Through a twist of fate, he obtained a new life.

Wrath remained in the wreckage of his destroyed leash.

Finally capable of standing on his own feet, he decided to live life by his own will.

He would slay anyone standing in his way…

Even if they were a god.

Born and raised in a remote village, Sheila entered the Royal Academy dressed as a man to become the knight of her dreams. However, what awaited her there were only characteristic and beautiful aristocrats. She was able to overcome the prejudice and harassment against commoners, and her natural thickheadedness and good-natured attitude allowed her to gradually gain a place in the school.“What? Only nobles have magical powers? But everyone in our village could use spirit magic.”If the spirit arts that shook the country to its very foundations and her gender were discovered, she’ll be instantly kicked out! Sheila’s tightrope-walking dormitory life began!

To save the hopeless Dark Fantasy World, I held back my tears and destroyed the world, then killed the Demon King and returned.

Now, I’m trying to save the world using the ‘System’ I gained as the ‘Regressor’s Privilege’… but the Main Heroines have also awakened their memories of the previous timeline.

God damnit.

“I can clear all your debts, but you have to substitute me in my marriage…”

When Liang Dou Kou was diagnosed with cancer, she formed a contract with Qin Zhi Ai to substitute her in the time she would be absent, including her marriage with Gu Yu Sheng.

Initially, Qin Zhi Ai suffered under the cold and harsh attitude of Gu Yu Sheng, who mistook her for Liang Dou Kou. But his heart gradually softened and he fell in love with her.

Just when he thought that he could live happily ever after with her, it is time for Qin Zhi Ai and Liang Dou Kou to revert their identities, and Qin Zhi Ai evaporated from Gu Yu Sheng’s life.

Months later, Gu Yu Sheng meets someone who possesses the gaze of Qin Zhi Ai who captured his heart…

- Description from Novelupdates