Himitsu no Tobira kara Ai ni Kite

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 d [bad word] 
 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?