BTOB drop a hint for BTOB-BLUE's comeback?
BTOB have dropped a possible hint forBTOB-BLUE's comeback.
BTOB's vocal unit, consisting ofEunkwang,Changsub,Hyunsik, andSungjae, made their debut with "Stand By Me" back in September of 2016. The unit will be coming back in early August, and it seems like BTOB have dropped a little hint to what the comeback song will be.