Kakkou no Iinazuke, also known as A Couple of Cuckoos, is a romantic comedy anime series that revolves around two high school students, Nagi Umino and Erika Amano, who discover they were switched at birth. Their parents arrange for them to be engaged to restore their rightful places, leading to comedic and heartwarming situations as they navigate their new lives. The series explores themes of family, identity, and unexpected relationships.