The Duty of Brotherhood series (兄弟仁義 Kyōdai jingi) was released by Tōei 1. * [1966-04-23] Family Obligations (兄弟仁義 Kyōdai jingi) dir: Kōsaku Yamashita 2. * [1966-08-13] [[]] (続兄弟仁義 Zoku kyōdai jingi) dir: Kōsaku Yamashita 3. * [1966-12-30] Fraternal Honor: Three Brothers of Kanto (兄弟仁義 関東三兄弟 Kyōdai jingi: Kantō sankyōdai) dir: Kōsaku Yamashita 4. * [1967-05-20] [[]] (兄弟仁義 続・関東三兄弟 [[]]) dir: Kōsaku Yamashita 5. * [1967-08-12] Duty of Brotherhood: A Daredevil of Kanto (兄弟仁義 関東命知らず Kyōdai jingi: Kantō inochishirazu) dir: Kōsaku Yamashita 6. * [1967-12-23] [[]] (兄弟仁義 関東兄貴分 [[]]) dir: Sadao Nakajima 7. * [1968-08-27] Brothers' Code: The Back Relation (兄弟仁義 逆縁の盃 Kyōdai jingi: Gyakuen no sakazuki) dir: Norifumi Suzuki 8. * [1970-04-10] New Fraternal Honor (新兄