The SSS Ranked Villain's Return - Chapter 13: Little Mishap

Another entry in what you can call the Proto Harem Series: the books written before the Harem Series that take place in the same world.

It’s about a swordswoman whose student is captured, so she goes to rescue her.

Xiao Ran transmigrated to a fantasy world. As a dungeon guard in the Celestial Dungeon, with a special floor called the Purgatory meant for powerful demons and martial arts experts, he faced a huge challenge from the start. The Eldest Princess acquired a forbidden martial arts technique and was banished to the Purgatory. However, no one was powerful enough to restrain her. All the dungeon guards were defeated. Xiao Ran stepped up and declared, “Your Highness, it’s better for you to behave yourself on my territory” and effortlessly subdued the Eldest Princess.

He progressed from imprisoning the Eldest Princess to delivering the Great Xia Kingdom from the evil clutches of various demons and evil martial arts experts.

…

Xiao Ran was the mastermind behind the scenes.

A cultivation story about how a declining sect is restored by a narcissist, a troublemaker, a meanie, an idiot, and a wimpy kid.

- Description from Novelupdates

All Ning Meng did was criticize the novel that she had read. When she woke up the next morning, she realized that she had entered the novel that she had read the previous night and became the unfaithful female supporting character. And soon, she would divorce her powerful husband and lead a miserable life. To prevent that from happening, Ning Meng has to find ways to stay by his side. That would mean she would make a lot of enemies along the way. Time for her to use the knowledge from the real world to turn her life around and not let others take advantage of her.