1.
If I'm giving this to someone for happiness
To this day, in my heart
This key that've been kept safe
Perhaps, would be passed to that man tonight
I shall be allowed, who would say no to such a sweet night?
※ Here's only key, for you
The only one key, knocking is no need
Without a doubt, without a doubt
I'm embracing love
Let it come
2.
This key will bring me happiness for sure
It as my very first time, with him
I have faith in the love that touched me
That's why my heart is beating so hard
Right here waiting for your gentle footsteps
(※ Repeat)