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

Sono yami ni furetakute sotto te wo [bad word] kimi ni 
Kizukarenai you ni...nodo bakari kawaita 

Reached out to your heart 
So deep yawarakaku tsutsumareta sono kokoro motto [bad word] shiritakute ah 

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

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

Sou dare demo himitsu wa [bad word] 
I even have so many secrets...maybe more than you 

Kokoro [bad word] [bad word] 
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 wo amaku nurasu ah 

How deep is your heart? 
Deep inside the darkness daremo 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...?