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The story begins when the protagonist is picked up on a rainy day by Daniel, Prince of Lorwyn.The protagonist receives the name Rael from Daniel and lives as a shadow prince.One day, Rael meets Leonhard, the Emperor of the Empire....
The main character comes from another world and happens to have an identical face of the prince in the kingdom. The prince saves him and asks him to play his stand-in, basically to become his 'shadow.'
After waking up to find himself in another world, he comes face to face with the prince of the kingdom, Daniel, who looks exactly like him. In return for saving his life, the prince asks him to play his stand-in, basically to become his 'shadow.' He accepts and with a new name and identity, Rael serves the prince by taking on any given tasks. But what will he do when he's asked to spend a night with the emperor of the realm...?