Sumi Sakurasawa is shy. Even simple situations, like going for a donut with someone or shouting at a stranger that they dropped something, paralyze her with fear. Her strategy? To become a rental girlfriend and make some money while practicing her social skills! But the pressure might not be the unintentional solution she thought it would be... And worst of all, to keep the job, she needs five-star reviews, which means she can’t freeze up or get discouraged on a date... How is that even possible?