The Crown in the Abyss

Arthur was the ruler of a world where he possessed everything. The king dreamed of becoming a slave. In the dream, he became a shabby and insignificant laborer named Han Seo Jin. He worked nonstop in a factor, like a machine. After waking up from the long dream, the king fell into a state of confusion. Was he a slave dreaming about being a king? Or was he a king dreaming about being a slave? Which one was the dream? Which one was the reality? 「Your majesty. Everything within the dream is a lie. Please do not forget about this.」