Here we go:
Who is that lovely and impressive girl on the left?
Did some research from the video description this gif was taken from, and it appears her name is
Hye Yoon Kim, an IFBB pro figure athlete hence the impressive wheels. The lady in all black is
Seobin Ha (Hangul:하서빈).
Jadefoot, among other Asian specialists, could confirm or not if she's really Hye Yoon.