My Shadow Monarch's System - Chapter 19: Letter of Truce.

A teenager who unexpectedly gets transported to the modern world from ‘the world of the immortals’ . He finds himself in the body of an ordinary guy. He wants to go back to his world and for that, he will have to practice to get stronger and investigate the reason why and how he crossed through to this world.

The legend of the continent, the battle that brought fame; the Sacred Phoenix Lady, the Windfire Meteor Godrealm saber-art; the pair that ascend and fuse, the golden sun and the blue moon, the fury of the crashing thunder. There is no magic, no battle qi, nor any martial arts in this land. However, there are martial spirits. Ten thousand years have passed since the founding of the Tang Sect on the Douluo continent, and it has declined. A new, proud generation of heaven’s chosen has been born. Can the new generation of Shrek’s Seven Devils rally the Tang Sect and once more compose the song of the Unrivaled Tang Sect?

Rob was a high-level hacker and wanted by many government organizations because he leaked the secrets of many countries. So he didn't dare to come out of his hiding much. Since he was alone, he lived a difficult life, which that he found the joy and the excitement of life in only two things: The rule of the Internet, and the anime world. One day he came across an interesting advertisement on his personal computer that turned his life upside down.[Ding!] [The art publishing system is being prepared...] [The system is ready!] From that time onwards his goal became to draw One Piece manga in the pirates' world!

He’s the apathetic, sinister school prince, she’s the silly, joyous new student.

When the simple girl meets the sharp-tongued boy——

Gu Zichen: “Su Niannian, are you a pig!!!”

Su Niannian: “….can you communicate properly, and not attack people like this? Even if I am a pig, then I’m a precious and unique pig!”

When the wounded girl wants to escape from the oppressive boy——

“Caring for precious animals is my duty.” Merely one heartless sentence, and he carries her directly home.

But why did he need to care for her all the way to bed, hey!!!

- Description from Novelupdates