1girl, animal_ear_fluff, animal_ears, bikini, bikini_skirt, black_bikini, black_hair, blue_archive, cat_ears, cowboy_shot, extra_ears, frilled_bikini, frills, halo, hands_on_own_thighs, leaning_forward, looking_at_viewer, misononasubi, off-shoulder_bikini, off_shoulder, official_alternate_costume, outdoors, serika_(blue_archive), serika_(swimsuit)_(blue_archive), solo, swimsuit