Demon hunter's Cooking Manual - Chapter 759 - 13: Jason Joins the Low-Level Game with Forced Merriment

Three reincarnations. Fourth life.

She was chosen to grow up as the Child of Fate; but when the real Child of Fate appeared, she was sacrificed for that child.

In the second life, she was abused.

In her third life, she lived as a beggar.

“This country is not safe. Let’s defect!”

LeBlaine chooses to be re-born into a new family to defect. The family she chooses is…

… the family of the future biggest villains in the Kingdom.

“Let’s try to get along until the time of my exile!” is what she tried to do. But what happened was…?

“My daughter is the cutest IN THE WORLD!”

“Give me that building, I can use it as my sister’s bathroom.”

“Don’t worry, LeBlaine asked me not to hit you. Not to not kill you.”

“WHO, WHO MADE MY SISTER CRY?!”

In a world where every profession has its own system, one's fate is determined by the job they awaken. Reynard Vale was cursed with the weakest profession—Unskilled Laborer—a dead-end path with no future. Mocked, powerless, and abandoned, he saw no way out.But on the night he chose to end it all, the system intervened.[Congratulations! You have awakened the hidden profession: Jobmaster (SSS-Class)!]Now, with the ability to learn, switch, and master any profession, Reynard is no longer bound by limitations. From boxer to librarian, investigator to world leader—every skill, every class, and every power is his to wield.The world that once looked down on him will soon bow before the ultimate professional.

An ordinary student, a wretched peeper, a cowardly teenager with a kind heart. In a terrorist attack, he inherited the knowledge of countless elites, embarked on a path of God Jagged Tu…

He is an artist!

He is a mathematician!

He is a psychology Doctor!

He is a master of fighting!

In fact, he is a man

Taken off raw site:

A wretched, dirty young man is working during the summer when he was caught up in a mysterious explosion. After that explosion, the young man is then left with the memories and knowledge of dozens of the world’s experts.

He has changed, his heart has become cold, iron-blooded. He became a killing machine, his mind turned mechanical, calculative. Everything goes according to his plans and calculations!

In this magical, slaughterous world, a door is opened for him…

- Description from Novelupdates

After being transported to this world, Nara Kazuki discovered that as long as he grinded enough proficiency, his jutsu could level up.And so, he began walking a very... peculiar ninja path.