Luna hints f(x) comeback as 5!

Luna has made fans anticipating and excited as she dropped hint of the group's return.

On her instagram post, she left a comment written as "f(x) for sure is coming soon, all of us bbuaanng  ~~>< "

Luna's emphasis on 'all of us' has fans relieved after so many speculations on Sulli's not attending group activities. Are you delighted?