Ever since the boys of 2PM ended their promotions for "Without You", the Hottests have been waiting patiently for them to step back onto the K-pop scene again. Lucky for the fans, 2PM returned after a short wait, and their performances are hotter than ever. After the influx of teasers and MV releases, 2PM finally made�their�comeback on M! Countdown. On today's Music Core, the hearts of fangirls are once again palpitating after another sizzling stage. Check out the performance of "I'll Be Back", an addictive track that you can't help but love!