Lyrics
_Verse 1:_
(Singer 1: Yui)
Shizuka na yoru, kokoro wa hitotsu ni
Mienai kizuna, eien ni hajimaru
Kage no naka, watashitachi wa mi o makase
Ai no ibuki, kokoro no koe
_Chorus:_
Oh, ai no hi, mienai kizuna o
Kokoro no naka, eien ni tsunagu
Mienai kizuna, watashitachi o
Tsunagu no naka, ai no kizuna
_Verse 2:_
(Singer 2: Erika)
Sasayaka na kotoba, te no hiraishin
Ai no kizuna, watashitachi o tsunagu
Uragawa no sekai, watashitachi wa tachi
Ai no kizuna, watashitachi o mamoru
_Chorus:_
Oh, ai no hi, mienai kizuna o
Kokoro no naka, eien ni tsunagu
Mienai kizuna, watashitachi o
Tsunagu no naka, ai no kizuna
_Bridge:_
(Both singers)
Kokoro no naka, ai no kizuna o
Tsunagu no naka, watashitachi o
Mienai kizuna, ai no ibuki o
Kokoro no koe, watashitachi o
_Chorus:_
Oh, ai no hi, mienai kizuna o
Kokoro no naka, eien ni tsunagu
Mienai kizuna, watashitachi o
Tsunagu no naka, ai no kizuna
_Outro:_
Mienai kizuna, watashitachi o
Kokoro no naka, eien ni tsunagu.