日语歌词：
Happy Birthday　祝おう　to me! to me! to us! to us!
今日という　最高に大切な日を
おめでとうみんな　to me! to me! to us! to us!
生まれてきた奇跡を歌おう
It’s the beginning day!
春生まれのキミはきっと　木漏れ日のような優しい笑顔
夏生まれのキミはきっと　はじけるように澄んだ眼差し
every day　誰かが　生まれた　記念日だよ
Happy Birthday　祝おう　to me! to me! to us! to us!
僕たちの　最高に特別な日を
ありったけの愛を　to me! to me! to us! to us!
贈りたいね　全ての生命に
It’s the beginning day!
秋生まれのキミと僕は　風を奏でる自由な歌で
冬生まれのキミのような　綺麗な空気胸いっぱいに
そうさ　出会えて　全部　はじまったよ
Happy Birthday　祝おう　to me! to me! to us! to us!
今日という　最高に大切な日を
おめでとうみんな　to me! to me! to us! to us!
生まれてきた奇跡を歌おう
It’s the beginning day!
ありがとう　はじまりの日に　心を込めてキミと
Happy Birthday　祝おう　to me! to us! 嬉しいよ
ありったけの愛を　to me! to us!
贈りたいね　笑いあって
to me! to me! to us! to us!
今日という　最高に大切な日を
おめでとうみんな　to me! to me! to us! to us!
この奇跡がくれた出会い　その絆に
It’s the beginning day!
to me! to us!
to me! to us!

罗马歌词：
Happy Birthday iwaou to me! to me! to us! to us!
kyou to iu saikou ni taisetsuna hi wo
omedetou minna to me! to me! to us! to us!
umaretekita kiseki wo utaou
It’s the beginning day!
haru umare no kimi wa kitto komorebi no youna yasashii egao
natsu umare no kimi wa kitto hajikeru youni sunda manazashi
every day dareka ga umareta kinenbi da yo
Happy Birthday iwaou to me! to me! to us! to us!
bokutachi no saikou ni tokubetsuna hi wo
arittake no ai wo to me! to me! to us! to us!
okuritai ne subete no inochi ni
It’s the beginning day!
aki umare no kimi to boku wa kaze wo kanaderu jiyuuna uta de
fuyu umare no kimi no youna kireina kuuki mune ippai ni
sousa deaete zenbu hajimatta yo
Happy Birthday iwaou to me! to me! to us! to us!
kyou to iu saikou ni taisetsuna hi wo
omedetou minna to me! to me! to us! to us!
umaretekita kiseki wo utaou
It’s the beginning day!
arigatou hajimari no hi ni kokoro wo komete kimi to
Happy Birthday iwaou to me! to us! ureshii yo
arittake no ai wo to me! to us!
okuritai ne waraiatte
to me! to me! to us! to us!
kyou to iu saikou ni taisetsuna hi wo
omedetou minna to me! to me! to us! to us!
kono kiseki ga kureta deai sono kizuna ni
It’s the beginning day!
to me! to us!
to me! to us!

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