ONA
Finished airing
1 episode
Mattsu to Yanma to Moburi-san: Nanatsu no Hihou to Soratobu Oshiro
Mattsu, Yamma and Moburi - The Mystery of the Seven Gems and the Flying Castle · マッツとヤンマとモブリさん ―七つの秘宝と空飛ぶお城―
Characters and voice actors
Staff and studios
Sakamoto, Saku
Director
Tanaka, Junichi
Script