It's no secret that BTS has some of the most loyal fans EVER.
The K-Pop group kicked off the Good Morning America Concert Series on Wednesday and fans camped out for days to see them.
BTS fans, known as the “ARMY” waited for a week in the rain to see their favorite boy-band, "Thank you for waiting for days (in the rain, cold, everything)," band member RM said.
The group consisting of Jin, Suga, J-Hope, RM, Jimin, V and Jungkook,broke the Beatles record, giving fans three Billboard number one albums in a year.