Close-up scene featuring a knight gripping a sleek, obsidian sword with a complex pattern and mesmerizing reflections dancing along its razor-sharp edge and smooth surface. Notice the texture of the metal, capturing the subtle curves of the blade in exquisite detail. The scene is depicted in hyper-realistic clarity, utilizing octane rendering and enhanced with Unreal Engine 5's capabilities, employing RTX shader technology for stunning detail and reflection. The scene boasts HDRI lighting for vibrant contrast, captured in ultra-detailed 32K UHD quality to showcase even the finest intricacies. The knight's armor gleams under the light, with a background that complements the intense focus on the weapon, merging historical elegance with fantasy allure.