Sumi Sakurasawa is timid. Even mundane tasks, such as grabbing a donut with someone or alerting a stranger to a dropped item, paralyze her with fear. Her plan? Become a "rent-a-girlfriend" to earn money while practicing her social skills! But raising the stakes even higher might not be the foolproof solution she believed it was... And even worse, to keep the job, she needs five-star reviews, which means no freezing up or freaking out on a date... How is that even possible?!