Zutto himitsu/Always A Secret

Donna kotoba de mo oboete iru
Kono mune ni zenbu shimatte oku no
Chiisa na omoide sae mo kobosa zuni
Kagi wo kakete kyou kara no takaramono
Soba ni irareru jiyuu
Kuchi ni daseba kowaresou de kowakute
Zutto himitsu no mama de dare mo shiranai keredo
Konna ni anata wo aisete sore ga shiawase
Ienai kimochi ha kyou mo yureru kokoro ni
Tayori nage na nagai kage wo otoshite iru
Hanarete omou dake no ima ha hitori
Dakishimeru sabishii kedo suteki na kyori
Furimuku kata ni seotta towa no sora he
Tabidatsu tabi setsunai yo
Anata ga kizukanakute mo daksihimete kurenakute mo
Hohoemu anata wo ima ha mitsumeteitai
Zutto himitsu no mama de dare mo shiranai keredo
Konna ni anata wo aisete sore ga shiawase
Hiza wo kakaete hitori nakitai yoru mo aru kedo
Mata asu au toki ni ha kitto egao de...

translation per line:

I'm remembering every word
Left completely in this heart
I won't even let those little memories go,
Lock that treasure from this day on...
Next to being free,
It seems like my mouth wants to give way...
But everyone's unaware that it would always be a secret ---
That happiness of loving you so...
The feelings in this wavering heart won't talk today,
Losing the long shadow of trust...
Only thinking apart, by oneself now ---
Holding someone tight but (still) lonesome... a beautiful distance...
Turning around, carried into the endless sky,
Beginning a painful trip,
You hold tight, unaware ---
Now I want to stare at you smile...
But everyone's unaware that it would always be a secret ---
That happiness of loving you so...
Even though the night wants to weep with the one holding his knees
Sometimes we'd meet tomorrow again --- with a smile certainly...