Minna neta machi
Sarigenaku arukeba
Tashika nikono me ni wa utsuru

Mure ni natte, susumu hitonami ni umorete
Obieteru kokoro

Raison d'etre, sonna fuu ni
Raison d'etre, onaji you ni
Waratte
Shizunde
Nagareru no wa naze?

Kagi wo sagashiterunda
Zutto sagashiterunda
Doko made mienai
Sono doa no kagi wa

English translation:

The town where everyone sleeps,
If I walk with nothing on my mind,
I can see it

Buried under the advancing crowd,
Is my trembling heart

My reason to be, in that way
My reason to be, in the same way
Smile,
Fall silent
Why do my emotions sway?

I'm looking for a key
I've always been looking...
I can't see everything
The key to that door...