Kakkou no Iinazukeカッコウの許嫁; A Couple of Cuckoos; 뻐꾸기 커플; 杜鹃的婚约; 杜鵑婚約; A Noiva do Cuco; Обрученные; Сведённые кукушкой; Una Pareja de Cucos; รักอลวนคนสลับบ้าน; Cucko no Iinazuke; La Prometida del Cuco

Kakkou no Iinazuke’s story revolves around 2 teenagers who got switched soon after their birth. Hoping to keep both of their biological and adopted children, their parents decided to engage the boy and the girl.