Umino Nagi was swapped with another child at birth. He’s going to meet his real parents today, but on his way to school, he meets a girl who is threatening to die to get out of her engagement.
If the two of you got married, 
you'd both be our kids.
.أنه إن تزوجتما، فستصبحان ابنينا
pensamos que si se casan juntos,
ambos serán hijos de todos.
hemos pensado que si os casáis,
ambos seréis hijos de todos.
abbiamo pensato che se voi due vi sposaste,
diventereste entrambi nostri figli.
Se vocês dois se casassem,
ambos seriam nossos filhos.
если вас поженить, то вы оба
станете нашими общими детьми!