Rent-A-Girlfriend summary: Kazuya Kinoshita is left heartbroken after his girlfriend breaks up with him. To fill the void, he turns to a mobile app to rent a girlfriend. Upon meeting Chizuru Mizuhara, he is instantly drawn to her amazing personality and striking looks. Despite their wonderful first date, Kazuya is conflicted because of the mixed opinions he hears about her and his own emotional turmoil from his previous relationship. Ultimately, he gives her a negative review and accuses her of toying with men's emotions. Chizuru, angry with his disrespect, reveals her true character as a strong-willed, fiery individual. As Kazuya is dealing with this drama, he receives news that his grandmother is in the hospital. Worried that she will be disappointed he doesn't have a girlfriend, he brings Chizuru with him. Even though the hospital visit turns out to be a false alarm, Kazuya's grandmother is extremely pleased that he's found a serious girlfriend. In order to keep up the charade, Kazuya and Chizuru decide to fake their relationship.