HP: The Arcane Thief - Chapter 189 - : Training

Years ago, Earth was indoctrinated into the “System.”Earth was not the only place with the System, however. With the System came the other races, Invaders. The Invaders had one goal, to obtain ownership of this new habitable planet. This created a bloodbath, and for years the war raged.This didn't really have much to do with Derek. Derek was kind of a loner. Yeah, he enjoyed the occasional chat or drink with others, but he never stayed in one place too long or really got to know anybody new.Derek did happen to be rather strong. After the years of fighting monster and Invaders alone, he had become quite adept at surviving. One thing that helped keep him alive was his refusal to get involved with others. He rarely cooperated with teams.One day, Derek broke his rules and decided to lend some help, as the mission didn't seem too hard. He should have stuck to being alone.

Yun Woo is the youngest author in history to enter the literature world. His debut work was a massive hit but this success was short lived for the unprepared.

Dreaming back in the middle of the night, Wen Mingtang saw the ending of the beauty who pampered the golden house;

After waking up from the dream, Wen Mingtang changed his core and decided to take a down-to-earth path…

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At the end of last year, the evaluation forms for personnel changes in various ministries in the capital came out, and the public chef of Dali Temple topped the list with a record of changing 12 cooks in half a year.

Since then, the public chef of Dali Temple has become famous in the first battle, and has become a nightmare for cooks all over the capital.

…

On this day, a new chef came to the public kitchen of Dali Temple who had been vacant for more than half a month…

- Description from novelbuddy

A man who was once called the world strongest agent ended up becoming a teacher after his retirement to train the new generation of agents. After many years of training his disciples, he is killed at the age of 60 by the ploy of a secret organization and was reincarnated in another world with all his past memories.Though he was surprised by the magic and the strange species of that world, he adapted very fast 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 tight 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 new students.