How does BTS fit this definition?

Truthfully, artists like BTS don’t fit into any genre or music category. They define their own categories because they do things that no artist does before them. Aside from the outright successes, BTS’s combination of genres and thematics are very unique within K-pop. I still think they’re a part of K-pop, and K-pop is a part of them, but it’s only an aspect of their story — as they are only an aspect of K-pop’s story, the way the Beatles are only an aspect of the story of British pop music, but remain an inescapable force.