Conan realizes a vital piece of evidence will be on the culprit , and determines that the culprit is the man who is a fake supporter of Noir Tokyo .
Conan has the imprint of the knife on Conan 's arm Conan he was hiding it .
Conan realizes a vital piece of evidence will be on the culprit , and determines that the culprit is the man who is a fake supporter of Noir Tokyo because he has the imprint of the knife on his arm where he was hiding it .