1girl absurdres artist_name bare_arms bare_legs bare_shoulders barefoot black_hair blue_one-piece_swimsuit blush closed_mouth collarbone dated green_eyes grey_neckerchief hair_between_eyes headgear highres i-47_(kancolle) kantai_collection long_hair mashiro_yukiya neckerchief one-piece_swimsuit sailor_collar sailor_shirt school_swimsuit shirt sidelocks signature simple_background sleeveless sleeveless_shirt solo swimsuit white_background white_sailor_collar