2017 animal_ears black_legwear black_swimsuit blush brown_eyes brown_hair cat_ears covered_navel detached_sleeves eyebrows_visible_through_hair fake_animal_ears fang fur_trim hairband halloween happy_halloween highres kantai_collection looking_at_viewer lying o-ring o-ring_top on_back open_mouth ryuujou_(kantai_collection) smile solo sonzai_soumei swimsuit thighhighs twintails