Which Naruto novel's main character's combat power reached its peak?

The main character of I am the Overlord had reached the peak of martial arts, so it could be said that the main character of this novel was the most powerful among all the Naruto novels. I recommend the novel I am the Overlord to you. The main character has peerless martial arts skills and the inheritance of the Overlord. He rides a top-notch demon beast and cuts through all obstacles. In terms of martial arts, he has reached the peak. I hope you like my recommendation.😗