1girl, bdsm, black-framed_eyewear, black_hair, black_legwear, blue_skirt, blush, bondage, bondage_mittens, bound, bound_arms, bow, bow_panties, cellphone, desk, gag, gagged, glasses, hairband, hogtie, improvised_gag, long_hair, lying, on_side, panties, panties_under_pantyhose, pantyhose, phone, pleated_skirt, red_eyes, rope, school_desk, school_uniform, serafuku, sex_toy, skirt, smartphone, solo, sweatdrop, tape, tape_gag, thighband_pantyhose, underwear, vibrator, vibrator_under_clothes, vibrator_under_panties, white_hairband, white_panties