1girl absurdres arm_up armband armpits beatmania_iidx blush flat_chest full_body gradient_background highres kinoshita_ichi leg_up midriff miniskirt nyah open_mouth panties pink_skirt pleated_skirt purple_eyes purple_hair purple_panties short_hair simple_background skirt sleeveless smile solo tank_top thighhighs twisted_torso underwear wristband