Rule 34 Dev - arms_behind_head blush bottomless breasts clenched_teeth cowboy_shot crop_top crop_top_overhang dyun female greyscale groin huge_breasts kantai_collection long_hair long_sleeves looking_at_viewer monochrome navel neckerchief ooi_(kantai_collection) school_uniform serafuku shirt simple_background solo teeth white_background|6143904528