mayonnaise (ringo gakuen), original, 1girl, bdsm, bondage, bottomless, bound, chair, clenched teeth, female focus, female pubic hair, glasses, greyscale, monochrome, no panties, object insertion, on chair, pear of anguish, pubic hair, pussy, rope, short hair, simple background, solo, spread legs, stomach bulge, sweat, tears, teeth, thighhighs, tied to chair, torn clothes, torture, torture instruments, vaginal, white background