Mysterious Assassin on Floating Temple Rooftop

Ultra-detailed 4K cinematic fantasy artwork of a mysterious hooded assassin crouching on the edge of an ancient Japanese-inspired temple rooftop, overlooking a breathtaking mountain city floating above the clouds. He wears an elegant black tactical-ronin outfit with intricate silver embroidery, layered armor, flowing cloak and subtle crimson accents. He holds an extraordinary katana in one hand, the blade partially drawn and glowing with a subtle electric-blue energy, intricate runes etched along the steel, razor-sharp edge reflecting the moonlight. His face remains mostly hidden beneath the hood, with only faintly visible intense eyes. His cloak and hair flow dramatically in the wind. Behind him: a gigantic luminous full moon, deep midnight-blue sky filled with stars and dramatic clouds, floating mountains, waterfalls cascading through the clouds, ancient pagodas and glowing lanterns scattered across the valley. Cherry-blossom petals drift through the air, some close to the camera creating beautiful cinematic depth of field. Epic composition, low-angle perspective, dramatic silhouette, volumetric moonlight, subtle blue and crimson highlights, atmospheric fog, realistic fabric and metal textures, intricate weapon details, cinematic depth of field, soft background bokeh, breathtaking scale, dark fantasy atmosphere, elegant rather than violent, photorealistic, ultra-sharp details, HDR, 4K Ultra HD, masterpiece, premium cinematic concept art, no text, no watermark.