It's been a month since K.Will returned with a new image and title song, "My Heart is Beating", and he's got something special prepared for today's Music Core stage. SISTAR's Bora who is his fellow labelmate in Starship Entertainment joined K.Will on stage this afternoon and made for a lovely stage as she played his love interest and danced along. Check it out below (Bora strolls in at around 1:54)! [gallery]