The Puzzling Challenge Letter of the Mysterious Thief Dorapan
The Puzzling Challenge Letter of the Mysterious Thief Dorapan (怪盗ドラパン謎の挑戦状!) is a 1997 Doraemon short film about The Doraemons. It was released on 8 March 1997 with Doraemon: Nobita and the Spiral City.