Ichika belongs to "Diana", a secret society of queens who punish bad men. The Imoaraizaka gang sells dubious aphrodisiacs disguised as beauty supplements, tricking women into becoming addicted to drugs. She sneaks into their hideout to punish the vile gang, but gets caught. She is left helpless and her hidden masochistic nature is slowly revealed. In the end, she turns into a lustful woman, surprising the men.