(noun) A very good-looking half Japanese boy with an amazing fashion sense and a good taste in music. A Kei will often show three main personality traits: abusiveness, bitchiness, and insanity. Keis are most prevalent in upscale urban areas, especially near any Louis Vuitton flagship stores or boutiques. A Kei often tends to idolize he likes of Amy Winehouse, Victoria Beckham, and Nicole Richie. Keis are attracted to large amounts of money, designer labels, and attractive foreign men.