Rule 34 Dev - 1girl arms_behind_back ass bdsm black_socks blue_hair blush bondage bottomless bound bound_arms bound_legs brown_shoes clenched_hands collar female_focus from_behind gag gagged green_eyes harness highres jackhejc kneehighs kneepits loafers lock looking_at_viewer looking_back on_railing orange_background padlock plug_gag railing ring_gag saliva school_uniform shoes short_hair short_sleeves sitting slave socks solo sweat sweater_vest|3435321942