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 need to go my secret room next.
عليّ الذهاب إلى غرفتي السرّية الآن
Um weiterzumachen, muss ich
sowieso in meinen Geheimraum.
Debo volver a mi cuarto secreto.
Debo volver a mi cuarto secreto.
Je n’avancerai pas
sans regagner ma pièce secrète.
Devo andare nella mia stanza segreta
per continuare il lavoro.
Agora preciso ir
à minha sala secreta.
Чтобы зайти дальше, 
мне нужно в секретную комнату.