1girl bare_legs barefoot black_skirt blue_archive blue_necktie blush breasts closed_eyes closed_mouth full-face_blush halo highres hufy jacket jacket_partially_removed medium_breasts multicolored_clothes multicolored_jacket necktie paper_on_head purple_hair school_uniform seiza simple_background sitting skirt solo sweatdrop thick_thighs thighs translated two-tone_jacket two_side_up white_background white_jacket yuuka_(blue_archive)