They made their debut in Japan with their first single album, Koi No Sign, on November 19, 2014, following in Korea with their first single album, Azure, on December 2, 2014.
Mereka melakukan debut resmi mereka di Jepang dengan album single pertama mereka, Koi No Sign, pada 19 November 2014, menyusul di Korea dengan single pertama mereka. album, Azure, pada tanggal 2 Desember 2014.