Letra da Música Theory Of Happiness de FT Island

Sakihokore na mo naki hana yo
Nanigenai hibi no naka de hikari o abi te

Nobashi ta kono te ga te
Ni shi ta mono nado wazuka
Itsunomanika mata egao
O hitorijime shi te I ta
Semai kokoro no naka ni
Shimaeru yō na chīsana yorokobi nanka zenbu
Shiawase ja nai to nisemono
To imasara kizui ta boku no oroka

Moshi ji ga modoseru no nara
Kimi ga I ta ano koro e modori tai
Shiawase wa ubau no de naku
Tebanashi te ataeru sono yūki no betsumei

Hirai ta kono me ga me ni
Shi ta keshiki wa wazuka
Daiji na mono hodo tōmei
Da to kizuka nai mama
Arigatō, mo gomen, mo iwa naku natte
Itsuka kūki no yō ni natte shitta
Demo kimi ga I nai to iki ga deki nai

Sakihokoru na mo naki hana ga
Kimi to I ta hibi no yō ni mabushiku te
Shiawase wa sagasu no de naku tada boku o
Yasashiku tsutsumu kūki no betsumei

Sukitōru kawa no nagare
De maruku natta ishi no yō ni
Toki no nagare ga ibitsu na kokoro o

Sakihokore na mo naki hana yo
Onaji ayamachi mō okasa nu yō ni
Sasayaka na hana no kaori yo
Awai iro o yakitsuke ta mune ni
Moshi ji ga modoseru no nara kimi ga I ta
Ano koro e modori tai

Shiawase wa ubau no de naku tebanashi te
Ataeru sono yūki no betsumei