It was a work that I had conceived for a long time, but when I finished writing it, I found that it had a life of its own that I couldn't control. I was also happy for it to develop on its own, and it's tentatively not a happy ending. I hope my protagonists will agree. I also really want them to be happy forever, but I always feel that it is impossible. The little girl is not an optimistic person, so she should be a stepmother.