A future time, a touching story. He spent his whole life just to make her smile. He spent his whole life just to give her a world for two people. They had loved each other for hundreds of years, but never told each other. And he didn't know if it was the impulse of meeting for the first time, or he had already fallen in love at first sight, and she didn't know if it was the emotion when she understood the truth, or she had already fallen in love, but they would always live in each other's hearts. . .