LOONA have dropped a new teaser video for their '#' comeback!

The mysterious '#3' teaser features the LOONA members' backs as they slowly turn around. It's the third teaser video following their striking '#1' and '#2' teasers. 

As previously reported, LOONA's upcoming second mini album '#' drops on February 5, and it also marks their first comeback in about a year. The girl group will also be promoting as 11 members as HaSeul is on hiatus due to health issues.

'#' drops on February 5 KST.