Five-member rookie group Dae Guk Nam Ah (D-NA) has been teasing us of their debut for over a month. Yesterday, they released their first single album titled Tokyo Boy (동경소년), which consists of two tracks: Tokyo Boy & Shining World and they also released their full MV. Today, the boys finally performed their debut stage on Mnet's M! Countdown with Tokyo Boy! Check out their performance below: http://www.youtube.com/watch?v=yeHZG4X9TxM http://www.youtube.com/watch?v=Ak_s4VsgT3g They have already garnered 40,000 fans, but would their debut be a success? We'll have to wait and see.