1girl, animal_ear_fluff, animal_ears, armpits, arms_up, ass, beach, beach_chair, bikini, black_bikini, black_hair, blue_archive, blue_sky, breasts, cat_ears, cat_girl, extra_ears, fang, frilled_bikini, frills, hair_ribbon, halo, long_hair, lying, medium_breasts, ocean, official_alternate_costume, on_side, parted_lips, presenting_armpit, red_eyes, ribbon, serika_(blue_archive), serika_(swimsuit)_(blue_archive), sideboob, sky, solo, swimsuit, thighs, twintails, user_fntj4748, v-shaped_eyebrows, very_long_hair