1girl bangs black_hair boots brown_eyes diving_mask diving_mask_on_head flat_chest goggles goggles_on_head grey_choker highres kantai_collection looking_at_viewer maru-yu_(kancolle) one-hour_drawing_challenge one-piece_swimsuit parted_bangs school_swimsuit shiratama_(mochi_shiratam) short_hair simple_background sitting solo swimsuit white_background white_footwear white_one-piece_swimsuit