How deep is your heart?
Deep inside the darkness  dare mo shiranai  tokubetsu na
Want to feel...

sono yami ni furetakute  sotto te wo nobashita  kimi ni
kizukarenai you ni... nodo bakari kawaita

Reached out to your heart
So deep  yawarakaku tsutsumareta  sono kokoro  motto  fukaku shiritakute  ah

How deep is your heart?
Deep inside the darkness  dare mo shiranai  tokubetsu na
Want to feel...

How deep is this love?
Deep inside your heart  yasashiku  kowarenai you ni
Want to touch...

sou dare de mo  himitsu ga aru
I even have so many secrets... maybe more than you
kokoro fukaku  kakusarete'ru
I wanna know your little secret that you have deep in you

Reached out in the dark
So warm  zaratsuita ase ga  kokoro no  HIDA ni  amaku nurasu  ah

How deep is your heart?
Deep inside the darkness  dare mo shiranai  tokubetsu na
Want to feel...

How deep is this love?
Deep inside your heart  yasashiku  kowarenai you ni
Want to touch...

How deep is your heart?
Deep inside the darkness... Somewhere unknown and special
Do you want to feel...?
Do you want to feel...?

How deep is your heart?
Deep inside the darkness, unknown to anyone and special
Want to feel...

Wanting to touch you in that darkness, I quietly reached out my hand
Unnoticed by you... my throat was always dry

Reached out to your heart
So deep, that softly wrapped heart, I want to understand it more deeply, ah

How deep is your heart?
Deep inside the darkness, unknown to anyone and special
Want to feel...

How deep is this love?
Deep inside your heart, gently, without breaking it
Want to touch...

Yes, everyone has secrets
I even have so many secrets... maybe more than you
Hidden deep in your heart
I wanna know your little secret that you have deep in you

Reached out in the dark
So warm, my rough sweat sweetly soaks into the folds of my heart, ah

How deep is your heart?
Deep inside the darkness, unknown to anyone and special
Want to feel...

How deep is this love?
Deep inside your heart, gently, without breaking it
Want to touch...

How deep is your heart?
Deep inside the darkness... Somewhere unknown and special
Do you want to feel...?
Do you want to feel...?