1girl >_< animal_ear_fluff animal_ears bag bangs bare_arms bare_legs bare_shoulders barefoot beach black_one-piece_swimsuit blue_archive blush breasts closed_eyes closed_mouth collarbone covered_navel day duffel_bag full_body grey_hair hair_ornament halo hana_kazari highres official_alternate_costume on_ground one-piece_swimsuit outdoors ponytail sand shiroko_(blue_archive) shiroko_(swimsuit)_(blue_archive) small_breasts solo swimsuit water