Osamu Osanai (小山内治) is a supporting character in Yondemasu yo, Azazel-san., voiced in Japanese by Ryouhei Kimura. The series' music includes "Yondemasu yo Azazel-san Opening 01 {HD}", "Like a Party by Yonekura Chihiro - Yondemasuyo Azazel san Ending 1 FULL".
