Arisa's company has been facing a worsening business situation and performance due to the influence of other companies and problems caused by tax hikes. Although models were usually hired for the annual new product launch, this year they were no longer hiring them, and management review and restructuring had begun. Meanwhile, Arisa is hit with an unexpected problem and is forced to become an underwear model to escape from the danger... A baby-faced office lady with a beautiful butt falls prey to sexual harassment by employees in the despicable work of a black company!