(Romaji)

Na Na Na why so why?
souzou shite miteyo
Just you like
suki na koto
hitotsu dake ja nai
kimi ga hiraku tobira

kotae wa soko ni aru no? Nai no?
I don't know. Ima mo wakannai yo
itsu datte bokura wa maigo
otona wa iu “Just a child...â€Â
demo toiteku no ga tanoshiinda
sugu ni wa toke nai kamoshin nai
minna hate nai hatena
akirame nai tokeru made wa

Shippai shite mo nee
“All right!!†to itte choudai
Seiippai imeji no umi oyoi de...
(Akiramenaide Hatenai hatena)

Na Na Na why so why?
souzou shite miteyo
Just you like
suki na koto
hitotsu dake ja nai
kimi shika shiranai ashita

(English)

Na Na Na why so why?
Try to imagine
Just as you like
The things you like
It's not just one
door that you can open up

Is there an answer there? or not?
I don't know. I don't know right now.
We're always lost.
Adults saying "You're just a child..."
But it's fun trying to work it out
Maybe you won't work it out so soon
It's all never ending, endless questions to be asked!
Won't give up 'til it's solved!

And even if you mess it up
Just say it's all right!
Swim in the sea of imagination with all your might
(Don't give up! Questions never ending!)

Na Na Na why so why?
Try to imagine
Just as you like
The things you like
It's not just one
tomorrow that only you can know