1girl, animal, arknights, arm_up, armpits, bare_shoulders, bikini, bikini_top_only, blue_sky, blush, braid, breasts, brown_eyes, brown_hair, cleavage, closed_mouth, cloud, collarbone, cowboy_shot, day, jacket, long_sleeves, looking_at_viewer, makeup_brush, medium_breasts, navel, off_shoulder, official_alternate_costume, open_clothes, open_jacket, otter, outdoors, roberta_(arknights), roberta_(summer_flowers)_(arknights), short_hair, shorts, side_braid, sky, smile, solo, starfish, swimsuit, thigh_strap, tuzhate, white_bikini, white_jacket, white_shorts