He should have held flowers and a ring and smiled at her and said, "Let's get married." They should have lived a happy and ordinary life... An air crash happened suddenly like a nightmare. He didn't even leave a complete body, only a death certificate. The answer given by the airline to the air crash was that the black box was seriously damaged and it would take time to repair. The cause of the air crash is unknown. She originally wanted to go with him, but by mistake, she returned to college and met the person she had longed for again. She also discovered some causes of the air crash. This time she must prevent the tragedy from happening...
Purpose: Her beloved died in a plane crash. She unexpectedly went back in time to change the tragedy.