1girl, animal_ear_fluff, animal_ears, bare_legs, beach, bikini, black_bikini, black_hair, blue_archive, blue_ribbon, blue_sky, blush, cat_ears, cloud, day, extra_ears, fang, hair_ribbon, halo, halterneck, knee_up, long_hair, looking_at_viewer, navel, official_alternate_costume, open_mouth, outdoors, red_eyes, ribbon, serika_(blue_archive), serika_(swimsuit)_(blue_archive), sitting, skin_fang, sky, solo, stomach, swimsuit, twintails, very_long_hair, whitebc