[Romanized:]

Furueteita no wa kimi no te ka boku no te no hou ka
Machi no raito ga ame ni terasarete hajikeru yoru ni

Bokura wa tada otona ni naritakute seinobi o shite
Chiguhagu na kotoba o kawashiatte waraiattanda
Futari de dattara ikeru yo ne chikyuu no sumikko e

Daremo shiranai yakusoku o
Kawashiatte bokura aruite ikunda
Oogesa na hodo ni ai o utau yo
Kanashii uta o nuritsubusu you ni

Aimai na tsukuri no machigaisagashi mitai datta
Nani ga machigai de nani ga tadashii ka wakaranai

Bokura wa tada "kore de tadashiinda" to tsuyogatta kedo
Hontou wa wakatteta yo michi no saki ni nani ga aru no ka
Nando datte chikaiatte ima chikyuu no sumikko e

Daremo shiranai yakusoku ga
Kasanatte te to te ni ni nigirareta
Baka ni saretatte ai o utau yo
Kimi to dokomademo ikeru you ni

Samenaide tte kienaide tte
Baka mitai ni negatteirunda
Doko ni datte ikerunda tte
Barebare no uso o tsuiteita

Daremo shiranai yakusoku o
Kawashiatte bokura aruite ikunda
Oogesa na hodo ni ai o utau yo
Kanashii uta o nuritsubusu you ni

Kietai toki mo kimochi ii toki mo
Itsudatte soba ni irareru you ni
Daremo shiranai yakusoku ga
Tsuyomaru ame ni nagarenai you ni

Kimi to dokomademo ikeru you ni

[Japanese:]

震えていたのは君の手か僕の手の方か
街のライトが雨に照らされて弾ける夜に

僕らはただ大人になりたくて　背伸びをして
チグハグな言葉を交わしあって　笑いあったんだ
二人でだったら行けるよね　地球の隅っこへ

誰も知らない約束を
交わしあって僕ら歩いて行くんだ
大げさなほどに愛を歌うよ
悲しい歌を塗りつぶすように

曖昧な作りの間違い探しみたいだった
何が間違いで何が正しいかわからない

僕らはただ「これで正しいんだ」と強がったけど
本当はわかってたよ　道の先に何があるのか
何度だって誓い合って今　地球の隅っこへ

誰も知らない約束が
重なった手と手に握られた
馬鹿にされたって愛を歌うよ
君とどこまでも行けるように

さめないでって　きえないでって
馬鹿みたいに願っているんだ
どこにだって行けるんだって
ばればれの嘘をついていた

誰も知らない約束を
交わしあって僕ら歩いて行くんだ
大げさなほどに愛を歌うよ
悲しい歌を塗りつぶすように

消えたい時も気持ちいい時も
いつだってそばにいられるように
誰も知らない約束が
強まる雨に流れないように

君とどこまでも行けるように

[English translation:]

Was it your hand or mine that was trembling?
That night when the town lights bounced off the rain

We just wanted to be adults, standing on tiptoes
Exchanging mismatched words, laughing together
If we're together, I'm sure we can go to all corners of the earth

Making a promise that no one knows about
We alone knew it and walked along
To the point of exaggeration, we'll sing of love
Hoping to paint over the sad songs

It was like an ambiguous game of spotting mistakes
Not knowing what was a mistake and what was correct

We just bluffed and said "this must be right"
But really, we knew what was at the end of the road
Now, making many vows, we go to the corners of the earth

Making a promise that no one knows about
We gripped it between our hands
Even if we're made fun of, we'll sing of love
Hoping that I could go anywhere with you

"Don't wake up," "don't go away"
I'm wishing like such a fool
And saying we could go anywhere
I told blatantly obvious lies

Making a promise that no one knows about
We alone knew it and walked along
To the point of exaggeration, we'll sing of love
Hoping to paint over the sad songs

When you want to vanish, or when you feel good
I wished that at any time, you could be there beside me
And that this promise that no one knows about
Wouldn't be washed away by the pouring rain

Hoping that I could go anywhere with you