Avoid Yandere Constellation - Chapter 162:

Witnessing her boyfriend cheating on her with her bestie, Shiyao was so angry that she went to a pub for fun and met a man, who was really a piece of work. After a crazy night she fled away, but was embarrassed to know that the man she slept with was her boss You Ze.
Jesus, give her a break!

- Description from Novelupdates

Li Tianyan accidentally found himself in the Hengwu Continent as a Concubine’s son from a family of warriors. Not only did he lose all his cultivation, but he also became a waste bastard with five spiritual roots. Since the accident, Li Tianyan had an aunt and uncle who were eyeing him, and brothers who wanted him to fail. There was an ugly wife in the house who was married back.

Lee Jin Woo once lived a dismal life.
He lived pitifully on a day to day basis in his five-pyeon studio filled with mold.

Then, one day, he died in a sudden fire.

When he wakes up, he finds himself inside a novel.
But there’s just one issue…
He had become the novel’s villain!