Today, the king of K-Pop aka Rain returned on stage to perform his Love Song on Music Core. Rain's performance was awesome yet again as he flashed his bulky abs towards the end of the performance with his choreography. Check out his performance below! http://www.youtube.com/watch?v=2FwI3Hym9I0 Furthermore, next week, Rain will begin his promotions for Hip Song starting on M! Countdown. So stay tuned!