Meitantei Conan OVA 06: Kieta Daiya wo Oe! Conan & Heiji VS Kid!

A blackmail call lands at Mori Kogoro’s private detective agency, only to reveal that the caller has dialed the wrong number. Conan immediately recognizes the voice on the line, an uncanny echo of his old friend Heiji, the Osaka‑based high school detective. The two reunite to track down a stolen jewel, but they soon discover they are not the only ones after it. The notorious master thief Kaitou Kid, drawn by the piece’s value of 100,000,000 Yen, is also in pursuit. With time ticking, Heiji and Conan must outmaneuver Kid to recover the jewel and expose the culprit.