The main character, Noah, is a reincarnated person. He was active as a sword saint in a previous life and as a sage in another. But he's been forced to work hard all his life, and he's sick of being a hero! One day, Noah dies and wakes up to find that he has been reborn as a prince. He has a high level of magical talent and the swordsmanship of a sword saint, but he doesn't want to get busy again, so Noah pretends to be incompetent with all his might. Then, on his 15th birthday. A skill appraisal reveals that he is incompetent (actually, he is just hiding it with his concealment skill). Noah is scorned and banished. With what seems like a gesture of warmth, his father gives him a remote territory.

"Now I'll enjoy my second life!" Noah is enthusiastic, but he doesn't know.

Actually, the territory is in the devil's forest, which is said to be uninhabitable. But his past life was more advanced compared to this one, and the level of human beings in this world is lower. Noah's ability is revealed when he helps a girl who is being attacked by a monster in the forest.

"Amazing!!! Noah-sama defeated a dragon with a single blow!"

"How did this happen? Ahhhhh!"

On the other hand, the royal family also notices Noah's ability and comes to take him back, but it is too late. At that time, Noah is already being praised by the people as the lord of the Demon Forest.