After finding out that his father's company's going under, Fuyuki Sakurai applies for a part-time job to help out... However, the job turns out to be something shady and illegal! Fuyuki runs to Shu Natsuki, his older step-brother, for help asking his new employer to annul the contract, but they're told to pay back the hiring expenses in full... Now, they're both gonna have to star in adult videos! Thus begins a love story between a flustered 20-year-old and his adoptive big brother!