1girl, arknights, bikini, black_bikini, black_footwear, blue_sky, breasts, cleavage, cloud, cloudy_sky, detached_sleeves, food, foot_out_of_frame, frown, hair_ornament, hair_rings, hammock, holding, holding_food, horns, long_hair, long_sleeves, medium_breasts, official_alternate_costume, okamoto_aoi, outdoors, palm_leaf, popsicle, purple_eyes, red_hair, sandals, sky, solo, star_(symbol), star_hair_ornament, surtr_(arknights), surtr_(colorful_wonderland)_(arknights), swimsuit, swimsuit_cover-up, thigh_strap