1boy, 1girl, bad_pixiv_id, beach, bikini, blue_sky, braid, breasts, hachimaki, hair_ornament, headband, heart, kantai_collection, large_breasts, light_brown_hair, navel, nyuudou_kajika, ocean, outdoors, propeller_hair_ornament, short_shorts, shorts, sky, solo_focus, straddling, swimsuit, teruzuki_(kancolle), twin_braids, twitter_username, water