1girl, anita_(arknights), arknights, barefoot, black_dress, black_hair, black_sky, breasts, dress, flower, holding, holding_instrument, instrument, lolifreak, long_hair, lute_(instrument), music, night, night_sky, overcast, playing_instrument, red_flower, rock, sitting, sky, sleeveless, sleeveless_dress, small_breasts, solo, water, waves