1girl, beach, bikini, black_choker, blush, breasts, choker, frilled_bikini, frills, greyscale, jacket, jacket_over_swimsuit, koyuki_(kotatsu358), large_breasts, looking_away, monochrome, navel, original, outdoors, removing_jacket, short_ponytail, side-tie_bikini_bottom, sky, solo, sparkle, sweatdrop, swimsuit, tachibana_yuu_(yakitomato), water, yakitomato