Experiments involving drugging and sexually assaulting the highest-ranking female office lady in the company: Sumire Mizukawa GVH-511

Sumire, a flawless beauty at the top of her company, and Sugiura, a perpetually mediocre employee who looks at her with envy... Sugiura accidentally discovers Sumire's weakness and uses her as a testing ground for aphrodisiacs, making her fall into depravity by being played with by an aphrodisiac penis, causing her to roll her eyes and arch her back in orgasm...