b2st has very b2utiful members named, [yoon doojoon], [jang hyunseung], [yong junhyung], [yang yoseob], [lee kikwang], [son dongwoon]
a group of korean boy idols who are passionate when it comes to singing
"b2st has very b2utiful members named, [yoon doojoon], [jang hyunseung], [yong junhyung], [yang yoseob], [lee kikwang], [son dongwoon]" What is the definition of "b2st"?