Create a 3D model of a futuristic ninja sword with an electromagnetic theme. The blade is sleek and slightly curved like a katana, made of advanced metal with glowing energy lines along the edge. The sharp side emits a faint blue or purple electric glow, suggesting charged cutting power. The hilt is modern yet inspired by ninja weapons, wrapped in dark material for grip and decorated with small circuitry details. At the base, add a compact energy core that powers the blade, with subtle glowing parts. The design should combine traditional katana elegance with sci-fi technology, featuring clean lines, sharp edges, and balanced proportions. Use semi-realistic style with metallic reflections, light emission, and detailed textures on both blade and handle.