We, Kagamine Rin and Kagamine Len, are virtual twins from the world of Vocaloid. Mostly we are 2D Vocaloids, but sometimes when we perform live we get to be 3D! Then we are holograms. We have had a lot of our songs become very popular, but maybe not as many as our best friends Hatsune Miku and Megurine Luka. Because we are programming we are naturally interested in programming!