MTL - Sweet Wife, Pampered Fast - Chapter 5 Under legal age

In this world, there exists a throne so exalted, it reigns supreme, governing the fate of all.All the realms of heaven and every race, with countless beings, bow down in submission.Heroes of great worlds vie in a tumultuous struggle, each competing for this highest throne, battling to become the strongest emperor.An unrivaled human prodigy, Ye Chen, succumbs to the most fearsome catastrophe in history only to be reborn. With the memories of his past life, he recommences his cultivation, striving to become an eternal and supreme emperor.Witness the path of rebirth against all odds of a supreme sovereign!!!

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.

A good-for-nothing man married a beautiful girl but was kicked off the bed on the wedding night. Furiously, he wrote a bill of divorce and ran away.
He was schemed a car accident in which he nearly lost his life. However, it turned out to be a blessing. He swallowed the soul that passed through the outer world, thus obtained superb medical skills and martial arts.
Later on, with the silver needles and invincible martial arts, he embarked on the road of counterattacks and was committed to his great dreams.

- Description from Novelupdates

Climb the Tower.The path to power is ever growing, immeasurable. A peak above a peak, above a peak. There is always the next peak to look up to. A place where dragons eat dragons.In this world where a catastrophe known as “Global Awakening” gave humans different magical abilities to fight the dungeon and monsters that invade earth, Jael is among the weakest—one of the Half Awakened, struggling to survive through odd and humiliating jobs.However his dream of climbing the Dungeon Tower won't be forever buried because a WILL has been left behind. An intent put into a spellbook that's been waiting for just who to claim it.In this golden era of worlds, all eyes are on the Dungeon Tower, where everyone seeks to become its master. “What do you desire? Money and wealth? Honor and pride? Authority and power? Revenge? Do you want to reverse your failures? Or something beyond them all? Whatever you desire—it is here. If only you climb.”Follow Jael’s journey as he ascends the Dungeon Tower, determined to create a new legend for himself.