Ninja Hattori-kun: Nin Nin Furusato Daisakusen no Maki  

Hattori and the War of the Little Ninja Villages, 忍者ハットリくん ニンニンふるさと大作戦の巻, Hattori: The Little Ninja: the Chapter of the Great Clash in his Native Country

Screened as a triple feature with Doraemon: Nobita no Kaitei Kiganjou and Paman - Birdman ga Yattekita.(Source: AniDB)