Bisco falls into Tetsujin's reactor, taking Kurokawa down with him. The reactor begins to overload, with Milo and the others just barely escaping in time as the dome starts to collapse. However, they're given no time to grieve their loss of Bisco before their next trial assails them. With Bisco gone, Milo tries to figure out what he can do on his own now.
So it wasn't just a Rust 
cultivation chamber?
لم تكن مجرّد غرفة زراعة صدأ إذاً؟
War dieser nicht nur ein Reaktor,
mit dem Rost gezüchtet wird?
¿No era solo un reactor
para cultivar óxido?
¿No era solo un reactor
para cultivar óxido?
Ce n’était pas
qu’un générateur de rouille ?
Quindi non era solo una vasca
 di produzione della Ruggine?
Não era só uma câmara 
pra cultivar Ferrugem?!