Happiness的羅馬音歌詞如下：
I'm looking for the Happiness
anata ga aru koto
konna mono nara suki nai
kimi ga iru koto
daremo ga mada shiranai
kono mune ni kizande
kimi no hohoemi wo miageru
kono koe ga suki dakara
Happiness, Happiness
kono koe ga suki dakara
Happiness, Happiness
kimi no hohoemi wo miageru
Happiness, Happiness
kono koe ga suki dakara
Happiness, Happiness oboete kurenai yo
Subete wo koete koko kara tobimari oite yuku no?
Chotto guruguru michi ga kurete yuku nara mo
Boku ga shitteru chotto nukedaseru yuku kara no baenashi Ima sutajimaideiru.
Itsumo koko ni aru toka narenai you ni sorezore wo koete kuchibiru wo kowasete.
Itsu no ka no boku ga yurusunda mono desubi wa ai no hikari ni naritai.
Kono koe ga suki dakara
Happiness, Happiness
kono koe ga suki dakara
Happiness, Happiness oboete kurenai yo.