Return of the Swallow - Chapter 20: Importance

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.

220 years ago, in the legendary Dragon Demon War, Hero Azell ended the war by killing the evil Dragon Demon race’s King Atein. He was able to save the population, but as a consequence, he was cursed. While he was dying, the high magician suggested a gamble that might save his life.

Even in his dreams, Li Tianming can’t stop himself from laughing! Why? Because, his family pets are all the Primordial Chaos Beasts of myth!

As a Rogue Immortal, Tang Qing felt that the pressure on him was very big because you will never know when the next Heavenly Tribulation will descend upon you.

Also, you will never know just how many Heavenly Tribulations you would have to overcome to finally come to the end of the Heavenly Tribulation.

Just right after overcoming the Ninth Layer Heavenly Tribulation, Tang Qing’s body got extremely damaged by the perverted Heavenly Tribulation.

After climbing out of the ruins and being met with an unfathomable encounter, he became the dao companion of a bunch of heavenly women……

- Description from Novelupdates