MTL - The Upgrade System of All Realms Starts From Conquering Naruto - Chapter 9 You really know how to pour cold water on the system

He is the Lord of the Realm, he is the Supreme of the Realm, and the Celestial Buddhas are the ministers.

After the fall of the earth …

Fan Ruoxi : Feng Chen, people should hug …
Chen Ruolin : Feng Chen, everyone wants to kiss …
Liu Ruyan : Seal the dust, hurry up and roll over the aging mother, the aging mother must hold up
Li Bingbing : Shao Feng, his mother’s waist is sore, others have to rub
Feng Chen : It’s called Mao. Can’t come one by one?

- Description from 69shu

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.

Urano, a bookworm who had finally found a job as a librarian at a university, was sadly killed shortly after graduating from college. She was reborn as the daughter of a soldier in a world where the literacy rate is low and books were scarce. No matter how much she wanted to read, there were no books around. What is a bookworm to do without any books? Make them, of course. Her goal is to become a librarian! So that she may once again live surrounded by books, she must start by making them herself.

If human life could continue to grow stronger indefinitely, reaching infinite heights, then one day it might connect with the heavens!