Detective Conan S01 E797 The Dreaming Girl's Confused Deduction

"One truth prevails."

A weird girl who calls herself Funachi meets with Kogoro to get his help to find a missing person. But Kogoro declines her request, so Conan decides to help her instead. Funachi and Conan work together to find a missing person named Hikone who apparently resembles a hero in an otaku game.