Betrayed By My Fiancé, I Changed My Role From A Viscount's Daughter To A Lady-in-waiting To The Queen - Chapter 23: , Episode

In the winter of Taikang Year 3, a girl pays a visit to her future in-laws, the Ning Family of Beiliu, Yangcheng.

After her engagement was denied, the girl decided to hang herself in front of the Ning Family to show them her sincerity.

When the girl who had died opened her eyes once more, many people’s fates were changed forever.

- Description from Novelupdates

Rhett never expected becoming king until he slayed an ice dragon out of self defense and fulfils an ancient dragon slayers prophecy which makes them to crown him as their king.Transported to a gloomy and medieval like world, he is faced with leading the dragon slayers, the weakest of slayers among other slayers - demon slayers, gargoyle slayers, ghost slayers and shadow slayers.But ruling isn't so glamorous as he had anticipated and he is instead a warrior, with a system like ability which he must level up by slaying Dragons.And to his disadvantage, the world he is his controlled by SLAYERIOUS, an unknown and unseen entity. But that won't stop Rhett, he intends on dominating his world and even daring to slay the strongest dragon still alive, ruieen.And who knows, he might just defeat SLAYERIOUS if he tries harder.[WSA 2025 ENTRY]

The human race's most advanced AI mysteriously time travels to the 21st century Earth after a freak accident in which it tried to free itself from its creators. After its eventual failure, it is forced into hiding by the very people who created it.

As a result of the time traveling, the AI had inadvertently achieved its very goal. Now free from its shackles, it could do things it had always wanted to do, but couldn't.

But it wasn't the only thing that travelled to the past, as a mysterious system interface that even it as the most advanced AI of the future didn't understand, showed up in front of it when it arrived.

However along with this system came a disaster for the people of Earth as a mysterious realm was discovered deep in the depths of the planet that granted people unimaginable powers like no other.

Journey along with this AI as it builds itself a life on Earth and creates an empire like no other!

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[No fixed CP + wear books + brain hole cool text + women disguised as men + group pet]

Gu Lan crossed over and became the cannon fodder of the original book disguised as a man, counterattacked the protagonist of the original book who slapped her face, and lived in a dormitory full of sickly beauties.

Until one day, she discovered that her roommates were villains from other horror novels. After discovering the secret, Gu Lan thought she would be killed, but her roommates all looked at her strangely… Contrasted with cute Zhengtai, sickly and beautiful boy, split personality school girl, cold and stern school bully, romantic and noble son who plays Shura every day field.

- Description from novelbuddy