Kudo Soyuki felt that his parents were acting strangely and decided to return home. He discovered that Conan was Shinichi and became a child. Later, Conan told me the truth and decided to stay and help Conan. And I'm really a little bit happy, really just a little bit, it's so good! I also really want to become a child so that I can experience the benefits of being a child again. Since Shinichi said it would be solved, I decided to support him and help him, but it would be great if there was this kind of medicine, so that I could become a child again. Like Conan, he also turned into a child, but for other reasons, he will still change back.