1girl, akashic_chronicle, anna_(akashic_chronicle), ano_hito, arms_behind_back, barefoot, black_collar, black_one-piece_swimsuit, blue_eyes, blue_sky, casual_one-piece_swimsuit, cloud, collar, flat_chest, full_body, hair_over_one_eye, horizon, horns, innertube, legs, long_hair, navel, ocean, one-piece_swimsuit, purple_hair, sky, solo, swimsuit, thigh_strap, toes, very_long_hair