Top student Arisa Nakano is drugged with an aphrodisiac by her bullying classmates, instantly transforming her into a desperate, anal-obsessed girl. Her anus violently convulses from forced enema accidents, creating an intensely thrilling spectacle. Objects like red pens and recorders are inserted anally, combined with shaved-pussy scenes, spanking, urinary incontinence, repeated orgasms, anal sex, and double penetration. Unrelenting stimulation drives her into endless anal torment, culminating in a shocking climax of orgasm-induced fainting.