Bài hát : Hakuyoku No Seiyaku - Pure Engagement (Sekirei Pure Engagement Opening) - Saori Hayami, Marina Inoue

Atarashii yakusoku ga
Kokoro o tsuyoku tsunagu
Kawaru sekai ni
Kane ga hibiku yukou!

Owari naki tatakai ga
Subete o hikisaite mo
Kimi no hohoemi tada shinjite

(ano hi no) kimi no yume mamoreru nara
(namida mo) itami sae dakishimeyou
(kizamou) kasaneau kono omoi
Mune no chikai yuzurenai

Aa sora no haruka hate made
Sou kaketeyuku yo na
Kasoku shiteku jounetsu

Aa donna unmei datte
Sou takaku koeteku
Makenai yuuki kureta kara

Itooshisa kureta hito
Zenbu kimi ni tsutaeyou
Umarekita wake
Inochi no imi negai

Hedatenai yasashisa ga
Kimi no tsuyosa no shirushi
Hirogetemisete mada minu hane

(hajimaru) atarashii ai no sutoorii
(negai o) kirameki o tsumuideiku
(egao de) doko made mo habatakeru
Chikai no hane kimi no sora

Aa kanata mezasu toritachi
Sou kaze ni mukatte
Ashita o egaiteiru

Aa tatoe genkai datte
Sou kizuna hitotsu de
Koete yukeru to shitta kara

Aa hitomi tojite ima dake
Nee sotto furetai
Ashita ga mezameru made

Aa kimi ni deaeta kiseki
Sou hikari no tsubasa
Eien no sora terashiteku

Aa sora no haruka hate made
Sou kaketeyuku yo na
Kasoku shiteku jounetsu

Aa donna unmei datte
Sou takaku koeteku
Makenai yuuki kureta kara