MTL - Book of Technology - Chapter 493 secret

Tian Han was a young boy who admired immortals. His dream had always been to become like them—flying on swords, using spells. But he was just an ordinary village boy, and he didn't have much of a chance for that. So, he always read books about immortals, and his admiration for them grew more and more every day. One day, he heard that he had a chance to become an immortal.“You can become immortal.”This was the sentence where his adventure began. Yes, he could become an immortal. And so, his journey started, and he found himself in the ruthless world of immortals.

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.

When the apocalypse’s greatest villain self-detonated to destroy the world, Shen Qingjia died and was reborn a month after Doomsday. No power, no gold finger, no space, no way to gather food, just opened her eyes and not long after has to face fierce zombies!! What kind of non-mainstream rebirth is this ah?!

Escaping, she met a cute girl with a beautiful voice but found that she was the villain who killed everyone. For the sake of the peaceful and sustainable development of all mankind and her own safety, Shen Qingjia decided… to relentlessly reform (fall down with) her! !

Shen Qingjia, “What you want to do?! I don’t like girls… Don’t suddenly rush over!… So soft, I won’t accept, ah ah!!!”

- Description from Novelupdates

Crossing to One Piece world, he became Roger’s younger brother.