If the song serves up a dollop of erotic tension, then the video whips that dollop into a plateful. I've read that Michel Gondry (of Eternal Sunshine of the Spotless Mind fame) is a fan, so perhaps he had something to do with the video. Then again, from the looks of her website, Jihae seems to be quite the visual artist herself. So maybe she didn't need the assistance of Gondry's imagination.
A co-worker who walked into my office as I had Jihae's album playing remarked that Jihae sounds like Cat Power. I'm pretty sure she didn't walk in while I was listening to "Black Pearl" (the subject of the video above), because "sultry" doesn't come to mind when I think Cat Power. But her observation is a sensible one with regard to the acoustic tracks on the album.