JACKAL AMONG SNAKES - Chapter 29: Walkthrough: Galamon%

Office worker Leon is reincarnated into a particularly punishing dating sim video game, where women reign supreme and only beautiful men have a seat at the table. But Leon has a secret weapon: he remembers everything from his past life, which includes a complete playthrough of the very game in which he is now trapped. Watch Leon spark a revolution to change this new world in order to fulfill his ultimate desire…of living a quiet, easy life in the countryside!

Perhaps it is the choice of fate. As a senior otaku, Qian Lingfeng got the “steel shell system”. However, when he swept the world with the system, became a local rich man, made all kinds of beautiful women, opened a harem, and realized the ultimate fantasy of thousands of otaku, he found that things seemed far from simple!
When the end comes, biochemical zombies suddenly come down, fierce beasts are in power, bloodthirsty zerg roam to kill the world, and human lives are comparable to dirt. Where will weak human beings go in this world? Is humanity going to be extinct? Or … can an otaku save the fate of the human race?

- Description from Novelupdates

Unique skill ‘creditor’ which can bet with its debtors on the unpaid debts.

And the ability to take skills and stats!

Kang Yoo-sik’s chance to start a new life at the Hunter Military Academy.

Su Yan had been crushing on Wei Zhou for seven years, only becoming his wife after an accident. Everyone mocked her about her luck, claimed she had married above her station, ridiculed her, and ostracized her. But Su Yan didn’t care. Her seven-year crush had finally blossomed and she felt only bliss. Yet, Wei Zhou had thought she was a scheming woman who used underhanded tactics to win his hand. It was all a misunderstanding! Su Yan tried to explain but Wei Zhou wouldn’t believe her. Eventually, Su Yan stopped trying, believing that time would prove it all. One day, Wei Zhou was on the tabloids, rumored to be having an affair with a female celebrity. Su Yan sought an explanation from him. So long as he explained, she would believe him. But Wei Zhuo never explained. He merely answered coldly, “Just behave as Mrs. Wei and mind your own business.” Mind her own business? Su Yan laughed. Looking back, how much of a fool had she been to assume she could melt his iron heart? Any blazing passion would eventually die out from indifference until nothing was left. Su Yan then realized. She was rich, beautiful, and had a great body. Why must she waste her efforts on a heartless blockhead like Wei Zhou? Su Yan dragged Wei Zhou to the Civil Affairs Bureau to separate their union. From now on, whoever they dated had nothing to do with the other! After their divorce, Su Yan went back to being herself. Excellent as she already was, Su Yan unleashed her dazzling light upon the world once more. Then, once every few days, Wei Zhou would see gossip about his ex-wife on the trending searches. Yesterday, she was having a candlelight dinner with a movie star, today, she had brought home a young hunk to engage in passionate romance?! Wei Zhou threw his phone on the floor. “To hell with your passionate romance! That’s my woman!” Surrounded by gorgeous men and enjoying her life, Su Yan asked, “Mister, who are you?”