1girl, animal_ears, arknights, bare_shoulders, barefoot, bikini, blue_sky, blush, braid, brown_eyes, brown_hair, day, full_body, jacket, knees_to_chest, knees_up, long_sleeves, official_alternate_costume, open_clothes, open_jacket, outdoors, parted_lips, roberta_(arknights), roberta_(summer_flowers)_(arknights), sao7, short_hair, side_braid, sitting, sketch, sky, smile, smug, swimsuit, water, white_bikini, white_jacket