"Tokyo, London, New York, Paris -- Oppa, Oppa!!" Super Junior's Eunhyuk and Donghae had no problems having fans scream "Oppa Oppa" in Seoul, as the duo performed their project song "Oppa Has Arrived" on M! Countdown's latest episode! Dressed in flashy suits with pop art prints, the boys delivered a fun debut stage on Mnet. Check out their performance below: