The Girl Returns, Still Herself

Amid a field of ruins lies an unspeakable secret. By chance, he saw the story behind her, and returned to the past to help her start over. She once deceived him about her feelings, and he was hurt because of her. In the end, he discovered that he himself was once her, and that they shared the same thoughts and feelings. Given another chance, she is still herself. Can the course of her life be changed...?