When Kazuya's girlfriend abruptly leaves him, he turns to a rental girlfriend service for solace. Enter Chizuru Mizuhara, whose charm initially captivates Kazuya until doubts arise about her sincerity. Their strained relationship takes a surprising turn when a family emergency forces them to pretend to be a couple. As Kazuya grapples with lingering feelings for his ex, how will this odd pair navigate their faux romance?