MTL - Great Tang Idyll - v4 Chapter 11 Mutual calculation

Waking in a strange yet familiar room the main character now will rise to the top of one most dangerous worlds of fiction with his new cheat.

Kyle was just an ordinary gamer until a truck-kun decided he was isekai material.Waking up in the world of Path of Transcendence—a novel he once read—he realizes he’s not the hero, the villain, or even a side character.He’s an extra, someone who was never mentioned in the story. But this world is no fairy tale: it’s cursed, doomed to fall to demons, with every major character destined to die.However, Kyle isn’t as ordinary as he seems. Blessed by the Roaming Storm, a mysterious and powerful force, he wields the rare ability to command lightning, wind, ice, and water.But is he truly just an extra, or is there more to his role in this doomed world? Armed with his knowledge of the novel and his newfound powers, Kyle must find a way to survive in a story that wasn’t written for him.Can he become the missing piece that changes the fate of this world, or will he be crushed under the weight of a plot that doesn’t even know he exists?

Aku was not the hero destined to save the world, nor the princess destined to be rescued.He was the demon king. Born without a name, without form, without freedom, predestined to die at the hands of the hero from his birth.However, Aku decided to defy fate. He took over the hero's body to find his freedom.It was then that an angel spoke to him, believing he was the hero who had failed to defeat the demon king.The angel told him that countless worlds and countless demon kings existed; those heroes who failed their mission were sent to an academy to amend their mistake.Now Aku will find himself caught up in battles with other demon kings and wars in other worlds while deciding whether to choose the path of good or allow himself to be consumed by darkness.

The MC entered the body of the An family eldest son, An Ziran, an arrogant 16 years old boy who weighed 78 kg (~171-172 lbs), who only knew how to eat, play and sleep. Seeing his current body, An Ziran decided his first priority was to LOSE WEIGHT!

Three days later after he became An Ziran, An Ziran’s father and his biological mother died, which meant as the eldest son he had to take over the family business.

Beside his legitimate first wife, An Ziran’s father also married 3 others women, who all wanted to take over the An family fortune but only the eldest son could be able to touch it, therefore they have to depend on An Ziran in order to live a comfortable live.

An Ziran’s father also had an older brother who is always planning to steal the An family fortune. The elder brother of An Ziran’s father and the woman he married had powerful connections. In order to save the An family fortune, An Ziran has to find a golden thigh to cling on. The butler told An Ziran that there is an engagement between the An family and an influential family. Therefore he takes his sister to that family house to make a connection.

However, during their journey, An Ziran’s younger sister overheard that the son of that family is UGLY, so as a beautiful and spoiled young lady coming from a rich household, she didn’t want to marry him and decided to run away. Without any other choice, An Ziran had to take his sister’s​ place and marry that man, who told him that he would let him go soon, but lied.

- Description from Novelupdates