The sound of the piano meets the edge of the sword, and the bones of a hero meet in the palace. He uses the harp as a strategy, and she uses the sword as a shield. From meeting each other on a stranger's road to trusting each other in life and death, this time they conquered the world, and this time the mountains and rivers were stable. They swore by the piano and sword that they would hold each other together in this life and never lose each other.
