Rin Mizuki is 23 years old and living in Tokyo, Japan. She is a rental girlfriend. She gets paid to date someone, she will act like a real girlfriend to all clients.

At first Rin did this job for money, but in the end she started to enjoy it. Meeting new people every day makes she learn to understand a person's character.

Rin always behaves like a real girlfriend and this makes most of clients fall in love with her. No wonder this makes Rin often find herself in difficult situations, choosing between work and personal interests.

Although she has dated many people, she has not had a real boyfriend in her life since she graduated from school. She is determined to find someone who can evoke feelings of love in her heart and become a true lover.