It Seems That I've Slipped Into a Different World. Also, My Gender Has Changed. - Chapter 90: Warning, From the Ancestor

HAPPYENDING -THERAPEUTIC – SWEETANDCOOL

Lin Jiao and Gu Quan have been in a relationship for two years. For his sake, she played the good and obedient little lady, willing to be as humble as possible. She thought that Gu Quan loved her as much as she did.But at a party, she heard him say to someone, “Lin Jiao is very nice, but she’s not her.”It was only then that Lin Jiao realized how ridiculous she must seem to others. She left behind all the resentment and obsession and sadly exited the stage as he had a sweetheart he could not forget.-Later, Gu Quan was remorseful, and managed to find Lin Jiao.

He grabbed her hand tightly and said in a hoarse, pained voice, “Jiaojiao, forgive me, okay?” He was hoping that she would forgive him easily as she had always done. However, he was alarmed when a certain figure walked into his line of sight.“Darling,” he said as he pulled Lin Jiao backward, giving Gu Quan a smug look. He leaned over to Lin Jiao, touching her face softly. “Let’s continue?”

Fifty years ago, the oxygen in the atmosphere changed, giving rise to a new form of air known as Spiritual Qi. Humans, plants, and animals alike suddenly awakened latent mutant genes and began evolving, gaining Superpowered Talents and Classes. Life took a new turn, and humanity had to adapt.Everything seemed to be going well until, fifty years later, a 16-year-old boy named Klaus awakened a terrifying Talent and Class. His awakening marked the beginning of a new era in human evolution.Unbeknownst to everyone, Klaus, who was shunned by society and dropped out of school to work for a better life for himself and his mother, was actually the last of the Nine Paragons—a being so powerful that even the heavens feared him.Watch as Klaus climbs the ladder of strength, pursuing absolute power with a single purpose: to protect and make his mother happy.

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates

Xu Shulou dreams she’s a character in a bizarre storybook.The male lead is Long Aotian, a man with a “Dragon Overlord” script: treasures fall into his lap, beauties vie for his heart.The first heroine is his delicate junior apprentice sister. The second, the Demon Sect’s saintess. The third… the fourth…Where does Xu Shulou rank? She flips through the plot and realizes—despite being Long Aotian’s official fiancée, she’s nothing but a disposable pawn.In the story, her sect elders dote on her fragile junior sister.“Shulou, yield this treasure to your sister. She’s weaker and needs it more.”“Shulou, don’t be unreasonable. Your gentle sister deserves care.”Even Long Aotian prefers the junior sister. He’s a flirtatious mess, forcing Xu Shulou to compete with other women, her jealousy twisting her into a villain. Meanwhile, the junior sister blossoms into a pristine lotus.But Xu Shulou refuses to play along.When the script demands she and her junior sister be kidnapped, Long Aotian saves the “weaker” girl, saying, “Shulou, you’re stronger—you’ll understand.”In reality? Long Ao Tian arrives just in time to see Xu Shulou slaughter the villains, scoop her sister into her arms, and vanish into the sky—without sparing him a glance.When demons attack, the story expects Long Aotian to leave his fiancée and lovers in the sect’s care. The elders protect only the junior sister, letting Xu Shulou be humiliated.In reality? The elders sneer: “Our senior sister dominates the cultivation world. Why would we need you to worry about her?”When the story’s Long Aotian coaxes the Demon Saintess into betraying her clan for him…In reality, the Saintess timidly asks Xu Shulou: “You’re a righteous heroine. I’m a hunted demon. Why would you want to befriend me?”In the script, Xu Shulou claws at other women in jealous rage.In reality, she’d rather live in peace—until Long Aotian pushes too far. Then she draws her sword.In the story, Long Aotian reigns supreme, surrounded by beauties.In reality, Xu Shulou steals his allies, hoards his treasures, and occasionally beats him up—while he sulks.“My sword saves the world and shields the innocent. It’s not for fighting over men.”“See? Dreams lie. I’m the one holding the Dragon Overlord script.”