Lyrics
Dare ni demo button hitotsu kakechigaete
Surechigau hi ga arune
Shinjiteta noni sunao ni narenai mama
Hanareteiku senaka ni koe wo nakushitari
Ima sugu ni tsutaetai kokoro no door no kagi wa
Sono mune no naka ni aru no
Makenaide nigenaide
Ikusen no omoidetachi ga musubi tsuketekureru
Just a key of heart
\'gomenne\' to ietara kitto wakaru noni
Kimi ga inakya dekinai
Kitto ima goro onaji omoitaiteru
Kizuna ga yondeiru yo
Dakara ai ni yuku
Ima sugu ni tsutaetai kokoro no door no kagi wa
Kono mune no naka ni mo aru
Me wo tojiru tada inoru tobira koshi ni hibiku kodou
Kimi ni todoku you ni
Just a key of heart
Meguriai kono kiseki umareta toki mo basho mo
Betsubetsu no kimi no mune ni
Mayowazu ni tobikonda futari dake no monogatari
Owarasenai yuuki
Just a key of heart
La la la la la la
La la la la la la
Though we are in love
Sometimes we do hurt each other dry and cry
Everyone has a such experience
I don\' know the reason why
I could not find the word to get you back
And I turned my back to you going out
I don\'t want lose your love in fact
Looking for the word
Just a simple word
To open up closing door of your heart
But it\'s hard to say for me I\'m sorry
I don\'t loose my faith
I don\'t loose my nerve
Let me go to see you to say the word
Not to be afraid to face the fear
Is the key of heart
I believe in love, two hearts
I believe in love, two hearts
Thousands of your smile
Getting back when I look back on those days of us
Now I feel they are still calling me
Maybe you\'re the same as me
Searching for the chance to make it up now
I belive you to be waiting for me
I\'ll be with you shortly
Looking for the word
Just a simple word
To open up closing door of my heart
Let me try to say just once I\'m sorry
Now I close my eyes
Wishing for you smile
My heart beat is synchronize with your one
Not to make up my mind to reach you
Is the key of heart
To meet in this world
Is just a wonder
Now I want to say I was born to love,
Fall in love with you,
Live in your future
Open up your door
Wrap me in your arms
Let me dive into your heart once again
To try to keep our story going on
Is the key of heart
La la la la la la
La la la la la la
La la la la la la
La la la la la la
Geu nugurado
Jalmot kkiwobeorin danchu hanacheoreom
Eosgallyeo beorineun nal issgessjyo
Nan mitgo isseossjiman
Soljikhan maeumeul oemyeonhan deut
Meoreojyeoganeun dwismoseup bomyeon
Amumal hal su eopseossjyo
Jigeum idaero jeonhago sipeo
Jamgyeoissdeon maeumui yeolsoega
I gaseumsoge biccnago isseoyo
Yonggamhage jikigo sipeo
Sel sudo eopsi manheun chueogeul
Ieojigo issneun ireumeun
Just the key of heart
I believe love to heart
I believe love to heart
Mianhadago
Iyagi handamyeon al su isseodo
Honjaseoman al su eopsgessjyo
Geudaedo jigeum nawa
Gateun saenggakhago issneungeojyo
Inyeoni uril bureunikka
Geudaereul hyanghae ganeungeo
Jigeum idaero jeonhago sipeo
Jamgyeoissdeon maeumui yeolsoega
I gaseumsoge biccnago isseoyo
Nuneul gameunchae gidohalkkeyo
Dugeungeorineun imaeum modu
Geudaeege jeonhaejidorok
Just the key of heart
Uyeonhi geudae mannan gijeokdo
Isesange taeeonan uimido
Jeomada sarang gaseume saegin chae
Mangseorim eopsi soneul jabassdeon
Geudaewa namanui jageun yaegideul
Kkeutnaji anhge hago sipeo
Just the key of heart
La la la la la la
La la la la la la
La la la la la la
La la la la la la
La la la la la la