First time hearing K-Pop! Meovv - Hit Em + Metal cover reaction

What in the kpop am I listening to!? I recently stumbled onto this snippet from ‪@CoryThunderlick‬ on instagram and just had to check out the full thing. Check out his stuff below:    / @corythunderlick     / corythunderlick   Check out my stuff here!   / merrick_dugan      / @cinemerrickreacts   #meovv #reaction #kpop