1girl, alternate_costume, bikini, black_bikini, breasts, closed_mouth, collarbone, fuyutsuki_(kancolle), grey_eyes, grey_hair, grey_thighhighs, groin, headgear, invisible_chair, kantai_collection, long_hair, medium_breasts, navel, one_side_up, sitting, solo, sora_(sora_clear_sky), spread_legs, string_bikini, swimsuit, thighhighs, very_long_hair, white_background