1girl :o bangs between_breasts blush box breasts gift gift_box greyscale happy_valentine heart highres kantai_collection large_breasts long_hair long_sleeves looking_at_viewer monochrome nanahamu nipple_slip nipples ooi_(kancolle) open_clothes parted_lips pleated_skirt sailor_collar school_uniform serafuku simple_background skirt solo translated tsundere valentine