To help make their comeback even more special, they will be bringing along a guest for their first stage on 'M! Countdown' to express the '24/7 healing code' concept. The adorable child actress Kim Soo Jung will be the special guest joining 2YOON to put on a cute performance that is sure to warm your heart for today's stage.

The girls are also said to hold a special 1:1 event with fans to celebrate the release of their song and music video, for which�Jung Hyung Don, Kim Ki Ri, and�BTOB made cameos in. Check it out here if you haven't seen it yet!