MTL - Great Demon King - Chapter 5 How can I call it?

During a luxurious cruise trip, he and she met unexpectedly~ Two months later, she was pregnant. They got married because of the child, but on their wedding day, he forced her to sign a divorce agreement. After the divorce, she thought they would have nothing to do with each other anymore. Who knew he would appear in her life again. When she went on a blind date, he showed up: “This is my ex-wife. She just separated from me.” When she went traveling, he followed her. She was furious: “We are already divorced, what do you want?!” “Let's get back together.” He started to pester her shamelessly. Given all the misunderstandings between them, how should she decide? Let's see who surrenders first~

A skilled but unfortunate modern-day assassin was killed in a freak accident. However, he soon found himself summoned to another world by an evil wizard, who had him possess the body of a boy as an experiment. After successfully planning the evil wizard’s downfall, he used the wizard’s body as a springboard to gain influence and power in his new world.

- Description from Novelupdates

If you can reincarnate or transmigrate into a cultivation novel world and you have a choice, would you be a protagonist, an antagonist, a side character, or a mob character?

And what would you do if you are aware that you’re a character in a cultivation novel?

Mao Miaomiao, a 60-year-old retired professional MMA fighter got transmigrated into a mysterious cultivation world with modern technologies. He found himself in his youthful body, and he got a system as a bonus.

Cliche, right?