NARDACK

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

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,