Episode 7 - Detective Conan

to stop the culprit in this episode, demonstrating their utility for the first time in a life-or-death situation.

: This is the first time Ran begins to suspect Conan is actually Shinichi . Detective Conan Episode 7

In of Detective Conan (titled "Once-A-Month Present Threat Case"), the "useful piece" likely refers to a specific clue or plot element that Conan uses to solve the mystery or progress the overarching narrative . 🧩 The "Key Piece" of the Case to stop the culprit in this episode, demonstrating

💡 : Fans often discuss this episode because of Conan's noticeably "chubbier" animation style, which was unique to the early production designs. Detective Conan Episode 7