aruka_(alka_p1), commentary_request, 1girl, ahoge, alternate_costume, blue_eyes, cloud, cloudy_sky, collarbone, day, dress, flower, hammer_and_sickle, hat, light_smile, long_hair, outdoors, see-through_silhouette, sky, solo, sunflower, unworn_hat, unworn_headwear, white_dress, white_hair, hibiki_(kancolle), verniy_(kancolle), kantai_collection, year_2017, 