After tranquilizing Heiji instead of Kogoro, he then declares Kento Togano is the culprit, the boyfriend of Ayako Oki. He reveals that the second incident was not for Ayako but for Toshiaki Fujisawa, the train station employee. The reason why Ayako knew that Kento was the culprit is because she decided to cheat off his Holmes test, but when she saw his test, it was blank, because he knew it would never be graded and he was busy preparing for the killing of the host. Kento confesses and reveals Toshiaki and Kanaya were collaborating to publish a Holmes book that had Irene Adler belittle Holmes. He felt insulted by this fan fiction and sought out to kill his targets and later his own girlfriend who threatened to blackmail him for the location of the prized fan fiction copy. After Heiji woke up, he reveals that he was spying on Conan during the deduction (at some point Kogoro hit him upside the head, which woke Heiji up but he pretended to still be asleep), so now he knows the truth about Conan's identity.
