The Fallen Hero Reincarnates as the Demon King's Son - Chapter 14 - 13 - Demonic Authority

Forcefully brought over from the modern world to an alternate world, Wang Chong felt detached and lived his life aimlessly.

However, when calamity struck and he saw his family and everything he cared for being torn apart, he felt regret.

Thus, he stood up and eventually became the Grand Marshal of the Central Plains, leading an army against those who seek to destroy all he cherished.

Yet, despite all his efforts, it was already too late to reverse destiny.

But before his death, a shooting star, the same one which brought him to this world, appeared before him, and he was given another chance to undo his regrets.

- Description from Novelupdates

Just as Li Meirong thought her life couldn't get any worse, she transmigrated into an abused body of a servant girl being sold at a brothel in a completely different world.

[WARNING: MATURE CONTENT]

Kim Mu-ryeong is the youngest member of a famous exorcist family. He grew up receiving love from his entire family and was considered a genius. The kind that appears once every hundred years. “Mu-ryeong, let me make a request.” After enrolling in high school, Mu-ryeong began to do simple exorcism work. The apartment’s elevator is acting weird. Someone is having constant nightmares. Even things like getting rid of a stalker or acting as a boyfriend. It was more of a problem-solver job than exorcism, But Mu-ryeong, being someone who helped anybody, There was nothing he couldn’t accept. But even for Mu-ryeong, there was one person he avoided… “Ki Hwan-young?” Tall and handsome with a mysterious, intimidating aura, And known for being impolite and having no friends. One day, Ki Hwan-young came to see Mu-ryeong. “My shoulders feel heavy lately.”