After confronting Shiba in a real model battle in Gunpla Duel, Riku's 00 Diver Ace has suffered serious damage. Unlike with GBN, Riku's precious partner has been damaged in reality. Koichi is worried about Riku, and tries to cheer him up, but is surprised by Riku's reaction.
while we weren't attentive enough.
في حين لم نكن يقظين بما يكفي
als wir nicht aufgepasst haben.
pese a que no poníamos atención.
pese a que no prestábamos atención.
en exploitant à merveille
notre imprudence.
Avete mirabilmente usato 
a vostro vantaggio la nostra distrazione.
pois não fomos atentos.
А мы были недостаточно внимательны.