Conan notices the furniture was moved and overhears the firefighters wondering why the birthday cake was put on a chair under the fax machine. With the new evidence, Conan can safely say it was arson instead of a suicide which Richard was thinking. Conan finds out who the culprit after he interviews the owner of the convenience store next door to the karaoke box. Richard, though knocked out, tells everyone the president of the mystery club set the fire with the fax machine because he wanted to heroically save Asami so she would fall in love with him.