Hi, Castadiva. I think what attracts people them more than other groups is because of the lyrics. The lyrics talk about hardships and issues.

The only reason I know of BTS is that I watched a Netflix documentary on it that I found very interesting.  Apparently, they are very famous around the world.  For anyone curious about K-pop, how it developed, and why it is popular around the world even among those who do not speak Korean, the Netflix documentary is one of the episodes of the show ¨Explained.¨ (In Spanish the documentary is called ¨En Pocas Palabras.¨ Like many Netflix shows, I believe the documentary may be in some other languages as well.) 

That's interesting.
I know their song,134340, the new title of Pluto, and I guess it says about a <autolink search="sense" style="font-family: HelveticaNeue, Helvetica, AppleSDGothicNeo-SemiBold, sans-serif; font-size: 17px; background-color: rgb(255, 255, 255);">sense</autolink> <autolink search="of" style="font-family: HelveticaNeue, Helvetica, AppleSDGothicNeo-SemiBold, sans-serif; font-size: 17px; background-color: rgb(255, 255, 255);">of</autolink> <autolink search="alienation" style="font-family: HelveticaNeue, Helvetica, AppleSDGothicNeo-SemiBold, sans-serif; font-size: 17px; background-color: rgb(255, 255, 255);">alienation, loneliness something like that. You mean the  issues are about social things or philosophy?</autolink>

Honestly, I was surprised with their success all around the world. Even though I'm Korean, I don't have any information about them except for their success, and curious about the reason.
Thank you for the information. I will look it up.