Lyrics
ai tai toki wa dō suru? tsubasa ga are ba ii noni
kimi ni ai tai toki wa dō suru ?
himitsu no tobira o Knock - Knock !
? ii desho?
tōi futari no kyori ga
setsunaku te egao ni nare nai
sonna watashi no koto mo wakatte yo
sabishikutte chotto okocchau
suki ni natte hontōni yokatta to
mainichi sasayaki tai motto ne!
ai tai toki wa dō suru? tsuki ni hoshi ni negau dake?
kimi ni ai tai toki wa dō suru?
monotarinai no yume ja
ai tai toki wa dō suru? tsubasa ga are ba ii noni
kimi ni ai tai toki wa dō suru?
himitsu no tobira o Knock - Knock !
? ii desho?
kimi ga watashi no naka de
sukoshi zutsu ōkiku natte ta no ne
itsumo issho ja nakya to
negau no wa tōzen desho tte yappa omocchau
dare no sei? setsuna sugiru mune
yasashiku dakishime te yo motto yo!
ii tai koto ga aru kedo koko ni i nai no dōshite?
kimi ni ii tai koto ga aru kara
hitori bocchi wa iya yo
ii tai koto ga aru kedo heya ni dare mo i nai no ne
kimi ni ii tai koto ga aru kara
himitsu no tobira de Knock - Knock !
? ki te yo ne!
suki ni natte hontōni yokatta to
mainichi sasayaki tai motto ne!
ai tai toki wa dō suru? tsuki ni hoshi ni negau dake?
kimi ni ai tai toki wa dō suru?
himitsu no tobira de Knock - Knock !
? ki te yo ne!
ai tai toki wa dō suru? tsubasa ga are ba ii noni
kimi ni ai tai toki wa dō suru?
himitsu no tobira o Knock - Knock !
? ii desho?