Conan through the voice of Kogorō explains everything how the culprit could commit such sinful murders. Conan then asks if Takeshi Hatamoto will get out of the closet and explains the entire situation again. Takeshi then explains his story to the other family members of the Hatamoto family. Conan then explains the situation where Ichirō Hatamoto was in which he later claimed that Ichirō himself was the killer. Conan then tells why Ichirō did each and every things which as final Conan is showing the sketchbook of Ichirō to everyone. While the Hatamoto family members are looking in Ichirō's sketchbook they see only pictures of Natsue Hatamoto. Ichirō took his sketchbook away from them and tells his story about why he had killed the elder and the other members on the ship. It is known that Ichirō loved Natsue and evenly asked the elder if they could get married. The elder has not been accepted Ichirō's marriage to Natsue and evenly has been mocking him since then telling him that he must stop with his useless dream. Ichirō starts to cry shouting that he would never forgive the ones he murdered.