Bài hát: Unspeakable Secret (Kill Me Heal Me OST) - Moon Myung Jin

Nugu.egedo malhal su eopneun bimil
Nuguna hanajjeum keureon ge itneun geo janha
Teukbyeolhal geotdo eopneun georago malhaedo
Mudeomdeomhancheok haedo apa

Ireon nareul sarang hajima
Nae mami ireon.geol eotteokhae
Neo.ege jul su itneun geon
Gojak meomchuji anhneun nunmurinde
Cheo.eum boneun natseon eolgullo
Ni ma.eume sangcheoman jul nainde
Na honjaman neol saranghage nwadugo ganda

Woe.roumjocha oraedoen chin.gu gata
Iksukhaejilman hande i miss you..

Ireon nareul sarang hajima
Nae mami ireon.geol eotteokhae
Neo.ege jul su itneun geon
Gojak meomchuji anhneun nunmurinde
Cheo.eum boneun natseon eolgullo
Ni ma.eume sangcheoman jul nainde
Na honjaman neol saranghagehae

Ireon naege dagaojima
Nae mami ireon.geol eotteokhae
Apeumi nege olmeulkka
Aesseo mireonaeneun geol neon moreugetjiman
Niga saranghaetdeon nal itgo
Neol ullyeotdeon nappeun naman ki.eokhae
Saranghandaneun mareun mothaedo saranghae