After the release of CNBLUE's fifth Japanese studio album Wave in September 2014, band member Lee Jong-hyun began forming ideas of releasing a single that slightly deviated from the band's music.
Setelah perilisan album studio berbahasa Jepang kelima CNBLUE Wave pada bulan September 2014, anggota band Lee Jong-hyun mulai mengeluarkan ide-ide untuk merilis singel yang sedikit melenceng dari musik band.