Rent-a-Girlfriend is a romantic comedy manga series that follows the story of Kazuya Kinoshita, a college student who is heartbroken after being dumped by his girlfriend. To cope with his loneliness, Kazuya decides to rent a girlfriend named Chizuru Mizuhara through a mobile app. However, their relationship becomes complicated when Kazuya's grandmother suddenly becomes ill and he introduces Chizuru as his girlfriend to her. To keep up the lie, Kazuya and Chizuru continue their fake relationship, and as they spend more time together, they begin to develop real feelings for each other.
The series explores themes of love, relationships, and self-discovery as Kazuya navigates his complicated love life with Chizuru while also dealing with the other girls he rented before her. Along with the other characters, including Kazuya's friend and his ex-girlfriend, the manga offers a fun and engaging look into the world of modern dating and the complexities that come with it. With a mix of drama, comedy, and romance, Rent-a-Girlfriend is an exciting and entertaining read for fans of the genre.