Setsuna rises up to create a future for a city without hope, but tragedy strikes time and again. Meanwhile, Rinne finishes her invention and Setsuna sets out for the future to save mankind’s existence.  Just before he goes, Setsuna makes a promise to Rinne.
I'll trade you for them.
سأبادلكِ بهم
Ich werd dich gegen sie eintauschen.
Te cambiaré por ellos.
Te cambiaré por ellos.
Je t’échangerai contre eux.
Ti scambierò con loro.
Eu vou trocar você por eles.
Обменяем тебя на них.