MTL - I, Luffy, Awaken the Sun God on the Top - Chapter 58

A man who was once called the world’s strongest agent ended up becoming a teacher after his retirement, to train a new generation of agents. After many years of training his disciples, he was killed at the age of 60 by a secret organization’s ruse and was reincarnated in another world with his memories intact. Though he was surprised by the existence of magic and the strange species in that world, he quickly adapted 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 rigorous 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 students.

“When I opened my eyes, I found myself as a character in a game. It was bewildering, but I thought it was worth a try. That was until I saw the skill given to me. It was [Opening Eyes], with no abilities whatsoever.”The story starts with the MC playing a game that is “Very Difficult”, so difficult, in fact, that no one has ever managed to kill the last boss. After 18 years of playing and, having the best attempt be at 30% of the last boss’s HP, he decides to try out a character that he never used.This character was the Slit-Eyed character. It had garbage stats and garbage traits. But, since the MC had ran out of options with every other character, he was trying to see if he could find any secrets with this new character. So he puts in his name ‘Zero’ and presses play… Only to find himself inside the game, as the Slit-Eyed character.

Lu Chen had a dream, an incredibly long dream.. The dream world was familiar yet at the same time unfamiliar. Singer, actor, freelance writer, he actually went through three sections of different lives in a dream world! When he woke up, Lu Chen thus embarked on a bright road of becoming a perfect superstar!

- Description from Novelupdates

"Locke transmigrated into an era where everyone had Battle Beasts. Daemons were rampant and humans were forced to build walls around their dwellings while depending on Beastmasters to keep those monsters at bay.