Manga by author Nardack - Status ongoing

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 students.

I was reincarnated as the daughter of Duke Lystil, who has been serving the Royal Family for generations. By using the clairvoyance skill that I possess, I had divination about a battle over the family succession caused by myself in the close future, which would also cause an uproar huge enough to shake the country... To avoid such dispute and live an enjoyable life peacefully, I decided that I will run away from home!But with the Tsundere Prince Self-centered Servant being all over myself, it's quite hard for me to go and disappear!!