Kubota tries to convince Inspector Megure and Kogorō that he isn't the killer, but the two believes that he is indeed the killer of Mr. Manaka. Conan discovers that the culprit is actually Mr. Ochiai which Conan tricks him by faking that he must go to the bathroom. He asks Mr. Ochiai where it is which Mr. Ochiai was trying to write it down for him but have fallen in Conan's trap. Inspector Megure and Kogorō are taking actions but Kogorō have his own stupid intends by saying that the paper should be blank if the pen couldn't write. They've then discovered it how the murder has been set after Conan's encouragement towards Kogorō. Mr. Ochiai admit the murder which he has stated that he did it because he don't want to have the art museum to get turned into a hotel and tries to avenge Kubota as well because he was illegally selling arts. The next day after the murder, Kogorō became famous after the case as well that the art museum stays in business.