BTS, aka Bangtan Sonyeondan or the Bangtan Boys, are an international K-Pop sensation.
They showed up on the scene a few years ago and now are being hailed as the "band that changed K-Pop."
They have also changed a few other things, such as three Guinness World Records with the release of the video "Boy With Luv."
BTS (방탄소년단) '작은 것들을 위한 시 (Boy With Luv) feat. Halsey' Official MVwww.youtube.com
The song, featuring Halsey, achieved the titles titles of "most viewed YouTube video in 24 hours," "most viewed YouTube music video in 24 hours," and "most viewed YouTube music video in 24 hours by a K-pop group."
The video got 74.6 million views on YouTube within its first 24 hours.
Less than 24 hours after that, the BTS fandom broke ANOTHER Guinness World Record: most used hashtag in 24 hours.
The hashtag #TwitterBestFandom was used a staggering 60,055,339 times in less than a day.
BTS fans are notoriously aggressive with their love for the band.
And they have earned the name ARMY.
With fans like these, it only makes sense that BTS will continue breaking world records.