Bài hát Hakuyoku No Seiyaku - Pure Engagement (Sekirei Pure Engagement Opening) - Saori Hayami, MarinaInoue. Atarashii yakusoku ga . Kokoro o tsuyoku tsunagu . Kawaru sekai ni . Kane ga hibiku
Bài hát Onnaji Kimochi (Sekirei Pure Engagement Ending) - Saori Hayami, MarinaInoue, Aya Endo. Unmei nante ne zenbu ne kimi shidai . Tsuiteku doko made mo . Onaji kimochi o . Kakaete . Mada dare ni