We present a technique for rendering animated 3D models in a Su-Muk painting style with user’s guide. First, a user can sketch directly over 3D models by varying ink and water values. And we simulate the behavior of ink-water directly on 3D model for consistent shade information over 3D models. After simulation, ink and water are spread over a 3D surface appropriately. Second, to achieve a real hand-crafted look of Su-Muk painting, ink-water behavior is simulated again on a 2D screen by using overall ink-water shade information from previous output of 3D ink-water simulation. We demonstrate some images for Su-Muk painting with our user-guided drawing system.