1girl, bare_shoulders, beach, bikini, black_choker, blush, breasts, choker, cleavage, close-up, frilled_bikini, frills, greyscale, jacket, koyuki_(kotatsu358), large_breasts, looking_at_viewer, monochrome, off_shoulder, original, outdoors, short_ponytail, sky, solo, sweatdrop, swimsuit, tachibana_yuu_(yakitomato), water, yakitomato