On September 1, MNL48 announced the formation of BABY BLUE, the group's first-ever sub-unit, in partnership with Tower Records Japan, a major Japanese music retailer. Said sub-unit is formed by MNL48 members Jan Elaurza, Coleen Trinidad and Amy Isidto. Following the announcement, BABY BLUE officially released its debut single titled "Sweet Talking Sugar", and was made available through EGGS, a Japanese digital music subscription service. The single, according to HHE, is an homage to the famed city pop genre, with a modern take via "the R&B and hip-hop genre". An official music video, produced by Carlo Manatad of Plan C, was released on GYAO!, Yahoo Japan's free online streaming site on September 16 and on MNL48's official YouTube channel on the next day.