1girl, animal, animal_ears, arknights, bare_shoulders, barefoot, bikini, bikini_under_clothes, black_bikini, blush, breasts, brown_eyes, brown_hair, eating, feet, food, innertube, looking_at_viewer, medium_breasts, mismatched_bikini, official_alternate_costume, otter, otter_ears, otter_girl, plabit, popsicle, roberta_(arknights), roberta_(summer_flowers)_(arknights), short_hair, shorts, soaking_feet, soles, solo, starfish, strap_slip, swimsuit, toes, water, white_bikini, white_shorts