character: nightmare_(arknights), Dreamy anime illustration of Nightmare from Arknights, shown as a full-body, eye-level composition in a serene lakeside sunset setting. She stands barefoot on the shallow rocky edge of the water, left leg slightly bent and right arm held loosely at her side while her left hand trails gently in the water's surface. Nightmare has long blonde hair with cat ears and a hair ornament, distinct heterochromia of one blue eye and one differing color, wearing a small off-shoulder black bikini that reveals her shoulders and midriff, paired with a cropped white sailor shirt and translucent light cardigan draped over her arms. The calm, reflective lake and soft glowing horizon with faint tree silhouettes form the background. The scene is softly lit by warm dusk light, delicate ripples and scattered light particles in the air enhance the tranquil, intimate mood.
