Mai is a genuine female masochist who becomes obsessed with masturbation whenever she reads BDSM magazines. Hearing her plea to "please train me more," Minex, the head of the pervert countermeasure department, relentlessly torments her without mercy. With a toy inserted into her anus, he fiercely thrusts into her pussy. The sight of her being penetrated by two objects at once is unbearable—she screams endlessly in doggy style, utterly humiliated.