Sunmi posted several photos on her Instagram on Monday, along with eye-shaped emojis. The photo shows Sunmi wearing a mini skirt and a black leather jacket. Sunmi pulled out the black chic look perfectly with each Sunmi and dreamy atmosphere. On the other hand, Sunmi released a collaboration song "Fire is off" with singer Bio through various sound source sites on the 22nd. "Fire is off" is a retro funky genre that expresses emotion in the 80s and 90s.