Kyoukai Senjou no Horizon - Volume 1, Chapter 02: The Wrecking Crew in the Classroom

In China’s modern martial arts society, Wu Xinghe was history’s youngest grandmaster of martial arts. He was invincible. Because of a strange incident, he was reincarnated as Qin Wushuang, a poor aristocratic boy in an entirely different world with its own set of rules. With his strong will and passion, he began his journey to pursue the highest peak of martial arts!

The handsome Emperor falls in love with a Knightess! Knightess Poliana loses to the Acreian Army and despite her struggles to survive in a male infested military, she is now about to die. But then, the young king of Acreia sees her efforts and tells her: "I have a dream, I wish to conquer the world and become an Emperor, would you like to join me?"

The eldest daughter of the Li family is beautiful and sassy, ​​she took space materials to flee famine, and after going through many difficulties in war, disease and epidemic, she united with her family to regain the glory and harvested a beautiful boy.

- Description from novelbuddy

In ancient times, there existed giant spirits capable of supporting the heavens. With bodies as enormous as stars, they soared across the universe. Great clan leaders with mysterious blood running through their veins shattered the void and created new worlds. Ancient Qi Warriors crossed a river of stars to enlighten numerous mortal beings. For unknown reasons, an era silently came to an end, all realms were separated, ancient giant spirits disappeared one after another. Thousands of years later, young Nie Tian managed to travel back into ancient times with the help of a drop of blood…