1girl, angry, arms_behind_back, bdsm, black_hair, blue_eyes, blush, bondage, bound, chalkboard, classroom, furious, gag, gagged, improvised_gag, kitauji_high_school_uniform, long_hair, neckerchief, pink_neckwear, rope, school_uniform, serafuku, shibari, shibari_over_clothes, solo, tape, tape_gag, tears