1girl, ass, blue_archive, blue_one-piece_swimsuit, blush, demon_horns, enomoto_nao, forehead, hair_ornament, hairclip, hina_(blue_archive), hina_(swimsuit)_(blue_archive), horns, lifebuoy, long_hair, lying, on_side, one-piece_swimsuit, pink_eyes, school_swimsuit, solo, swimsuit, thighs, very_long_hair, white_hair