Realistic portrait painting of a Japanese robotic geisha, adorned with kanji symbols and intricate decals, rendered with octane for exquisite detail in 4k, inspired by Unreal Engine 5, Ex Machina, and I, Robot. The artwork captures the essence of advanced technology blended with traditional aesthetics, with a focus on fine craftsmanship and expression. The portrait should convey a sense of elegance and serene beauty, while incorporating elements that highlight the fusion of robotics and human likeness. The composition is carefully balanced to avoid common digital artifacts, ensuring clarity and precision, without any unintended distortions or errors. The geisha's features are gracefully composed, avoiding any anatomical inaccuracies, and presenting a seamless integration of mechanical and organic elements. The artwork aims to engage viewers with its striking blend of futurism and tradition, devoid of any distracting elements such as watermarks or signatures.