[DA1SUK1DAY01691]

My favorite would be I WISH by Morning Musume (lyrics courtesy of Project Hello):

Video

Spoiler:

Japanese/Romaji

Spoiler:

ひとりぼっちで少し
退屈な夜
私だけが淋しいの？
Ah　Uh

くだらなくて笑える
メール届いた
なぜか涙止まらない
Ah　ありがとう

誰よりも私が
私を知ってるから
誰よりも信じてあげなくちゃ！

人生って　すばらしい　ほら　誰かと
出会ったり　恋をしてみたり
Ah　すばらしい　Ah　夢中で
笑ったり　泣いたり出来る

誰かと話するの
怖い日もある
でも勇気を持って話すわ
私の事

晴れの日があるから
そのうち雨も降る
全ていつか納得できるさ！

人生って　すばらしい　ほら　いつもと
同じ道だって　なんか見つけよう！
Ah　すばらしい　Ah　誰かと
めぐり会う道となれ！

晴れの日があるから
そのうち雨も降る
全ていつか納得できるさ！

人生って　すばらしい　ほら　誰かと
出会ったり　恋をしてみたり
Ah　すばらしい　Ah　夢中で
笑ったり　泣いたり出来る

人生って　すばらしい　ほら　いつもと
同じ道だって　なんか見つけよう！
Ah　すばらしい　Ah　誰かと
めぐり会う道となれ！

でも笑顔は大切にしたい
愛する人の為に…

hitoribocchi de sukoshi
taikutsu na yoru
watashi dake ga samishii no?
[Ab/Yas/Yag/Go/Ka] Ah Uh

[Yas/Yo] kudaranakute [Yas/Ts] waraeru
[Yag/Is] MEERU [Yag/Go] todoita Yeah
[Na/Yas] naze ka namida tomaranai
[Na/Yas/Yag/Go/Ts] Ah arigatou

dare yori mo watashi ga
watashi wo *******u kara
dare yori mo shinjite agenakucha!

jinsei tte subarashii hora dare ka to
deattari koi wo shite mitari
Ah subarashii Ah muchuu de
warattari naitari dekiru

[Yas/Is/Yo] dare ka to hanashi suru no
[Yag/Ts/Ka] kowai hi mo aru (Yeah)
demo yuuki wo motte hanasu wa
watashi no koto

hare no hi ga aru kara
sono uchi ame mo furu (Yeah)
subete itsuka nattoku dekiru sa!

[Ts/Ka] jinsei tte subarashii [All] hora itsumo to
onaji michi datte nanka mitsukeyou!
Ah subarashii Ah dare ka to
meguriau michi to nare!

[Ii/Ab/Yas/Yag] hare no hi ga aru kara
sono uchi ame mo furu (Yeah)
subete itsuka nattoku dekiru sa!

jinsei tte subarashii hora dare ka to
deattari koi wo shite mitari
[Is/Yo] Ah subarashii [Ts/Ka] Ah muchuu de
warattari naitari dekiru

jinsei tte subarashii hora itsumo to
onaji michi datte nanka mitsukeyou!
Ah subarashii Ah dare ka to
meguriau michi to nare!

demo egao wa taisetsu ni shitai
aisuru hito no tame ni...

English

Spoiler:

A boring night
All by myself
Am I the only lonely one?

You sent me a silly e-mail
That made me laugh
For some reason, my tears won't stop
Ah, thank you

More than anyone else
I know myself best
I have to believe in myself more than anyone else

Life is wonderful
Meeting someone, falling in love
Ah, how wonderful, it's like a dream
You can laugh and cry about it

There are days when I'm scared
to talk to someone else
But I'll have courage and talk
About myself

Because we have clear days
We have rainy days too
Someday you'll understand it all!

Life is wonderful
It's always the same road
So let's find somethin else!
Let's make it a road where we'll run into
A wonderful person!

Because we have clear days
We have rainy days too
Someday you'll understand it all!

Life is wonderful
Meeting someone, falling in love
Ah, how wonderful, it's like a dream
You can laugh and cry about it

Life is wonderful
It's always the same road
So let's find somethin else!
Let's make it a road where we'll run into
A wonderful person!

But I want to treasure my smile
For the person I love...

I think it was pretty mature for them at the time when they just had the 4th generation added, and the lyrics are quite uplifting and spirited for when you're down on those days...