1girl azuki-iro bangs black_hair blush breasts cherry_blossoms collarbone covered_navel covered_nipples covering full_moon hairband highres holding holding_towel kantai_collection long_hair looking_at_viewer medium_breasts moon night night_sky no_eyewear nude_cover onsen ooyodo_(kancolle) outdoors semi-rimless_eyewear sitting sky smile soaking_feet solo steam towel under-rim_eyewear water