After taking Apoptoxin 4869, the killer named Qin Mu turned back into a twelve-year-old boy and changed his name to Miyamoto Mingmu. As the spy of the black organization, he lived a seemingly ordinary life and struggled with the princes. The CPs were Ryoma and Qin Mu. The growing popularity of the black organization forced this little spy to risk his life as a death criminal (into Conan). In the end, he was hunted down by the black organization, and then fled to a foreign country. A few years later, he changed his identity and returned to Japan to live with the grown-up Ryoma again.