"Haha to Kuraseba" is the original title of the movie war tragedy drama a woman loses her husband and oldest son during WW2 ... and her youngest son gets killed by the bombing of Nagasaki after the war, when she is living alone ... she is visited by the ghost of her youngest son ... and they begin spending time together https://en.wikipedia.org/wiki/Nagasaki:_Memories_of_My_Son