Gashin bumps into Yuusei and learns that his foster brother has accomplished a great feat. He built an autonomous city for the Japanese people to safely live in. Yuusei asks Gashin to join him and live a normal life, but not everything is as it seems.
That's why I'm not leaving.
We're in this together!
Deshalb bleibe ich hier.
Por eso no me voy.
¡Estamos en esto juntos!
C’est pour ça qu’on restera ensemble
Por isso não irei embora.
Estamos juntos nessa!