The first Kpop I went crazy over with was FT Island... I already knew BIGBANG though that time but I'm into instruments... it was the time that in my country korean tv shows and music wasn't so popular but now... Oh my God!
For me the song that pulled me into the world of kpop was Exo's Call Me Baby// However I have heard a couple of kpop songs here and there five years prior, but they didn't pull me in XD