It's a story about a powerful king who is reborn in a new world with magic and has to navigate his new life, facing various challenges and making new friends and enemies along the way.
I'm not sure specifically as I haven't read a novel titled exactly like that. It could be about a new beginning leading to an unexpected end, perhaps in a post - apocalyptic world where rebuilding (the beginning) ultimately fails (the end).
In 'beginning after the end', the protagonist has to deal with the fact that he is no longer in his former position of power. He starts from a relatively low point in this new life but gradually rises as he learns more about the world and his own abilities. The plot is filled with twists and turns as he battles against various foes and overcomes different obstacles on his path to regain some form of his former glory.
I'm not sure specifically as I haven't read it. But it might be a story about new beginnings that follow an end, perhaps in a fictional world with its own set of characters, conflicts and resolutions.