Hello! Project Radio Drama Osaka-hen Vol. 1 (ハロー！プロジェクト ラジオドラマ 大阪編 Vol.1; Hello! Project Radio Drama Osaka Compilation Vol. 1), is a double CD release in the Radio Drama Series. It features various Hello! Project members starring in drama episodes previously aired on radio.
It was released as a regular edition (EPCE-5296～7) and a limited edition (EPCE-5294～5). The limited comes with a script, mesh bag and a beach ball.
- Sayonara, Ashita: Sen Yon Hanashi (さよなら、あした：全4話; Goodbye, Tomorrow All 4 Episodes) by Ishikawa Rika, Yoshizawa Hitomi
- The Myth Tsutenkaku: Sen Yon Hanashi (ザ・ミス通天閣：全4話; The Myth Tsutenkaku: All 4 Episodes) by Iida Kaori, Otani Masae, Saito Hitomi
- Ojii-chan no Mukashibanashi: Sen Go Hanashi (おじいちゃんの昔話：全5話; Grandpa's Old Story: All 5 Episodes) by Konno Asami, Tanaka Reina
- NG-shuu, Comments (NG集・コメント; Bloopers, Comments)
- Morning Musume
- Melon Kinenbi