[Verse 1]
Even if nothing lasts forever, somewhere in my heart
I was digging deep into the ground, lost and found
I found a little faded photo of when I was a kid
My motto of enjoying today rather than tomorrow

[Refrain]
The sun was burning hot
The sea was also shining brightly
I never thought it'd be old
I've already seen my bed, and it's all over the place
Ah, why, ah, why, ah, why, now, why me?
Why am I tearing up?
There was a time, babe, ooh-ooh

[Pre-Chorus]
The brilliant golden age, the age that was dyed with gold

[Chorus]
No matter what anyone says, I'm twenty-one
Back to when I was young
I wasn't scarеd, I was twenty-one
Everything was shining
I'vе experienced hot love
And even the painful breakup
After those experiences, I'm a diamond
And now I'm shining, hey
[Post-Chorus]
I'm twenty-one (One, one, oh oh oh oh)
Forever young, oh (Oh oh, oh-oh-oh)
I'm twenty-one, ooh woah woah

[Verse 2]
I'm twenty-one
A year after I became an adult
Even though I don't know what will happen tomorrow
I was just happy to have friends
As the days passed, I'm now a real adult
I want to stay in the past more than in the future
But I'm still living in twenty-one, forever young

[Refrain]
The sun was burning hot
The sea was also shining brightly
I never thought it'd be old
I've already seen my bed, and it's all over the place
Ah, why, ah, why, ah, why, now, why me?
Why am I tearing up?
There was a time, babe, ooh-ooh

[Pre-Chorus]
The brilliant golden age, the age that was dyed with gold
[Chorus]
No matter what anyone says, I'm twenty-one
Back to when I was young
I wasn't scared, I was twenty-one
Everything was shining
I've experienced hot love
And even the painful breakup
After those experiences, I'm a diamond
And now I'm shining, hey

[Post-Chorus]
I'm twenty-one (One, one, oh oh oh oh)
Forever young, oh (Oh oh, oh-oh-oh)
I'm twenty-one, ooh woah woah

[Bridge]
Flamboyant lights that never stopped their song
Our passion that never cooled down
When we were free, we were twenty-one

[Chorus]
No matter what anyone says, I'm twenty-one (Oh woah)
Back to when I was young (I'm twenty-one)
I wasn't scared, I was twenty-one
Everything was shining (No)
I've experienced hot love (Oh)
And even the painful breakup
After those experiences, I'm a diamond (I'm a diamond)
And now I'm shining, hey
[Post-Chorus]
I'm twenty-one (One, one, oh oh oh oh)
Forever young, oh (Oh oh, oh-oh-oh)
I'm twenty-one, ooh woah woah