An orphan who was taken in by a music hall learned to play the piano from an early age. He was born into troubled times and the peace was broken by the war. The heroine has a single character and a genderless surname. In order to protect the music hall and her sisters who once took her in, she volunteered to play music and piano for the soldiers of the enemy country. After the war, the people around her reviled her. She was like her name, a leaf, and would one day be abandoned by the tree and buried deep underground. She decided to die, but she met a young man in red. She played the piano to him. He was his only audience. She didn't know who he was, but she understood that he was her only one. They lived together again. This time she was no longer imprisoned, she was just her. The identity of the male protagonist is very special. He needs to understand and learn from people in the human world. After learning the emotions and desires of people, he will regain his identity.
Intent: The girl is redeemed and understands the world