Arai, Kazuhiro. Interreligious Coexistence and the State: The Problem of the Use of the Word Kāfir in Indonesia. Kyoto Bulletin of Islamic Area Studies. 2021. 14. 115-123
Kazuhiro Arai. The Media, Saints and Sayyids in Contemporary Indonesia. Orient. 2011. XLVI. 51-71
Kazuhiro Arai. An Attempt to Reform Ḥaḍramawt in the Early Twentieth-Century: A Preliminary Consideration on the “Truth Society (Jam‘iyyat al-Ḥaqq)” of Tarīm. Memoirs of the Research Department of The Toyo Bunko. 2007. 65. 65. 91-112
新井 和広. 書評と紹介 山口元樹著『インドネシアの改革主義運動 : アラブ人コミュニティの教育活動と社会統合』-Book Reviews : YAMAGUCHI Motoki, Islamic Reformist Movement in Indonesia : Educational Activities and Social Integration of the Arab Community. イスラム世界 = The world of Islam / 日本イスラム協会 編. 2019. 92. 69-76
Different Migration Patterns of the Hadrami sada: from a Comparison of the al-‘Aydarus and the al-Habshi families
(Discovering the Indian Ocean World: “Gyres”, Indian Ocean and beyond 2023)
The role of Islam in the history of West Java: From a biography of Sunan Gunung Jati
(Early Islamization Reflected in Javanese and Other Texts from Southeast Asia 2022)