Bangtan Sonyeondan aka BTS made their debut in 2013

They work so hard and there were times when they were awake for two to three days for practice

They started with 35 fans from South Korea

They knocked on each and every door in America and asked them to attend their concert which was free

And now they are the biggest K-pop band in the world

BTS enjoy incredible fan following called as ARMY

They always worked hard and promised their fans to come up with something new always

Wishing BTS, a happy 9 and many more to go