"I want nobody nobody
One artist originally from this country sings "the floor is calling me and I don't know what else to do" in a song with the refrain "report to the dance floor." One song from this country bemoans a "complicated girl" and contains four repetitions each of the words" "fantastic" and "elastic." Another group from this country sings the lines "i'm genie for your wish" and "listen boy/my first love story" and are named for a 80s song from this country titled "Girls' Generation." The group that sings "I want nobody nobody but you" is from this country, whose best known entertainer appeared in Ninja Assassin and beat Stephen Colbert in a dance-off. For 10 points, name this home country of the Wonder Girls and Rain, stars of its "k-pop" music scene.
One artist originally from this country sings "the floor is calling me and I don't know what else to do" in a song with the refrain "report to the dance floor.
South {Korea} [or {Republic} of {Korea}; or {Daehan}-{Minguk}; prompt on {Korea}; do not accept “{Democratic People's Republic} of {Korea}”]