It seems like MAMAMOO is gearing up for a comeback!
On MAMAMOO's official Twitter account, the number '9966' was displayed in blue, red, and white. Along with the pitch-black background, this constitutes the colors of the Korean flag. Maybe we'll see something about the group's cultural roots?
The post also had a checkmark next to the date March 14th, 2019. Are you looking forward to this potential comeback?