The Sage Art: Boil Release Rasengan is a vibrant, swirling sphere of chakra with a dynamic, boiling effect at its core, resembling superheated water. The outer layer is a bright, luminous blue with steam-like wisps emanating from the surface, while the inner core glows a fiery orange-red, creating a striking contrast. The Rasengan maintains a perfect spherical shape with a slightly uneven, turbulent surface texture to emphasize its volatile energy. The overall design is highly detailed to capture the essence of its powerful, boiling nature, with subtle cel-shading to match the anime 3D art style.