In the angel's dream, there was a girl named "Ying Mengling". In Ying Mengling's dream, she had an eternal promise with a little boy when she was a child. Years passed by without a trace, and Ying Mengling had been waiting for the fulfillment of that promise... So there was a very dramatic scene. There are two male protagonists who both claim to be the little boy who made a promise to her when they were young... But she doesn't know that one is the real little boy...(Ying Mengling: This... How is this possible~~~It's pitiful)