1girl alternate_costume armpits bangs bare_arms bare_legs bare_shoulders barefoot bikini black_hair blush breasts closed_mouth collarbone commentary_request glasses gradient_background green_eyes hairband halterneck highres kantai_collection leg_up long_hair looking_at_viewer lying navel on_back ooyodo_(kancolle) semi-rimless_eyewear simple_background skindentation small_breasts solo string_bikini striped striped_bikini swimsuit under-rim_eyewear yuuji_(and)