dramatic gothic fantasy landscape, ominous black tower looming in a frozen wilderness, dark clouds overhead with lightning flashing, two beautiful young female knight sisters standing side by side wielding swords, highly detailed faces with beautiful eyes, long flowing hair, the final battle, (best quality,8k,highres,masterpiece:1.2),ultra-detailed,(realistic,photorealistic,photo-realistic:1.37),cinematic lighting,dark fantasy realism,concept art,professional photography,sharp focus,vivid colors