Her Nickname 백옥 because she has very white shiny skin.
Very contrasting with the color of the nipples which are dark brown. After seeing the film scenes, it deserves a thumbs up because she really wasn't awkward in performing the sex scenes. You can see how 백옥's face reacted when the actor devoured and licked her breasts and nipples.
Highly recommended HD #VOD for Korean Softcore Sex lovers