Kazuya Kinoshita, a 20-year-old college student, has a great girlfriend named Mami Nanami. But he doesn't anymore. Mami abruptly ends their relationship, leaving him distraught and lonely. To alleviate his anguish, he hires a rental girlfriend using an internet app. Chizuru Mizuhara is his companion, and she manages to win Kazuya's attention with her exceptional beauty and adorable manner. However, after reading about other customers' similar experiences with Chizuru, Kazuya feels her pleasant smile and caring nature are all a ruse to play with his emotions, and he grades her negatively. Chizuru, enraged, slams him for his blatant duplicity, displaying her real pert and hot-tempered personality. This one-sided debate, however, is cut short when Kazuya arrives.