MTL - This Option is Fantastic - v4 Chapter 231 Pangu universe, a former ancestor

There came a sudden ravage by monstrous creatures in a civilian world, leaving humanity's hope to lurk in shadows. Hunters, trained in special schools, wield potential and abilities that enabled them keep the beasts at bay.For Buji, life’s difficulties stem not from being an orphan, but from relentless bullying. Nicknamed “the weakling,” he detests the label but bears it forcefully since he could do nothing.When he transfers to a new school to join his foster sister, Buji thought things would be different. But, during the Awakening Ceremony of the school, he find out a shocking truth: he's was going to be an S-Rank hunter without a talent.Awakening no talent only added more difficulty to his life struggle as he was branded an outcast.On the verge of death during his first raid, Buji awakens an enigmatic system.[Host Found][Survival due to inheritance][Congrats, you have gained the status of a 'player'.][The player, upon leveling up will awaken a potent monster][Class: Animagus | Type: Snake | Aspect: Venom][Do you accept?]Given the choice to embrace a monstrous path, Buji seizes it with unyielding resolve.'If becoming a monster is my only path to strength, I’ll take it—and the world will regret casting me aside. Fighting against these hunters was going to be a job, but imagine a world where I had control over monsters, had my own monster kingdom, and becoming the strongest of all. Stepping on these hunters won’t be a deal anyway.'“Yes!”

A man who was once called the world’s strongest agent ended up becoming a teacher after his retirement, to train a new generation of agents. After many years of training his disciples, he was killed at the age of 60 by a secret organization’s ruse and was reincarnated in another world with his memories intact. Though he was surprised by the existence of magic and the strange species in that world, he quickly adapted to his condition as a newborn and took advantage of it. He acquired special magic and gained a massive amount of strength thanks to his rigorous discipline, in order to reach his goal: Resume his career as a teacher which he left halfway through in his previous life. This is the story of a man, who, based on the memories and the experiences of his previous life, became a teacher who travels through the world with his students.

Ye Yang, a straight man from Northeast China, transmigrated into a novel about court fights, became a concubine, and was bound to a system, which could put on view the favorability score of the main characters.

On condition that the emperor’s favorability score was too high, he’d fall in love with Ye Yang. However, if his favorability score was too low, he’d be mercilessly killed. In order to protect his life and chastity, Ye Yang forced himself to create his own persona, repeatedly switching between the personality of an unrefined man from Northeast China and the first beauty of the harem.

Yet, things were getting worse and worse. At first, he let the favorability score of the dog emperor drop. Later, the score began increasing rapidly. Watching how the favorability score was about to skyrocket, Ye Yang panicked.

He wore a gold chain and raised a mink, silencing all of the imperial concubines of the harem. Feng Luan’s favorability score had been increased by +1.

He had a snowball fight with the dog emperor and pushed him into a snowdrift. Both of them caught a cold. Feng Luan’s favorability score had been increased by +10.

The mink he raised thought out a plan for Feng Luan to renovate the imperial study room worth of more than 10.000 taels of silver. The imperial study was so horrible that one could hardly bear to look at it.

Feng Luan’s favorability score had been increased by +100.

What’s going on! Are you still a straight man!

……

The longer Ye Yang lived in degradation, the more he felt that the dog emperor was different from what he initially thought.

At his feet the ground was covered in blood and bones, but behind him was the delightful scenery of the prosperous world, and the coming of all nations.

A few years later, he helped Ye Yang up the stairs and gazed into the distance. He saw a myriad of twinkling lights, bustling, bright and beautiful.

And Feng Luan whispered in his ear.

“My dear Imperial Concubine, look.”

“This is our country.”

- Description from Novelupdates

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