The original modern sequel to "Bu Bu Jing Xin" - "I Owe You Happiness": Because he was afraid of losing, he let her go; because he was afraid of being hurt, she left him; because they thought they had countless tomorrows, so there would be a future... But they didn't expect that her departure was as involuntary as her appearance, and she was not allowed to return to him. He and she, who have all kinds of memories with her, can only live in her memory, and can only flow with the development of history... When they meet again in modern times, it is not only him, but also them. She... Just wants to cherish it all, and so do they. In this reincarnation, how will their stories be continued or rewritten...