MTL - The Legend of Futian - Chapter 41 You are right

A man was transported to Ancient China and eventually became a servant of a declining household without a male heir. He utilized his wits and modern knowledge to help the household and eventually become trapped in the sea of political turmoils of the period.

- Description from Novelupdates

[Warning: This story contains extreme violence, philosophical depth, psychological breakdowns, self-improvement, self-realization, and themes of maturity.]“Even Gods need character development.”That was the belief Pratham lived by—struggling, always pushing forward. Until the day he died, starving in a world too cruel to care.But death was only the beginning.He transmigrates and awakens in a multiverse as Leon. In this multiverse, the greatest threat to humanity isn’t demons or beasts, but Entities. In response, civilizations across each universe forged a single hope: the Entity Hunters Organization, training warriors to stand against the impossible.He had no magic. Just his will, his fists—and a little sister he swore to protect at all costs.Enrolling in the Entity Hunters High School, Leon finds comrades, purpose, and war. He fights beside them across different planets and universes, grows with them, laughs with them—then loses them all.Leon rises not as a hero, but something else.

Target Audience: This book is for those who had enough of MCs getting bullied and those who enjoyed progression. I’ll now apologize if I miss something and MC didn’t act according to your likings, I’ll adjust and improve so let’s get addicted to it! SSS rank talent? I can get 10,000 xp multiplier and convert them to upgrade my skills? Proficiency? Item Quality? Top ranker? Beat them up! Arrogant villains? Slap them to death! My Little Sister getting bullied in school? Destroy the school! In my eyes, you are just experience points to farm! Let’s farm experience points!

In the next life time, he would absolutely not become an author.
He would once again be cursed to the danger of crossing over into a book.
During the time when he broke free of his shell, what he first saw was just the handsome, handsome male lead that he had written.
During the time when the male lead was pinching the small soft flesh of his neck, it was also his first time hearing the male lead’s voice.
“Return goods,” the male lead said in this way toward the vendor stall’s owner.
Pei Bufan: “…… meow?”

- Description from Novelupdates