If you don't understand french, here is what they're saying ^__^ :
Title: Niambay's decision.
Niambay: I'm happy that I finally found someone I can mesure up to.
From now on, we'll be rivals!
He probably means I'm his idol.
Niambay: He must be scared shitless knowing I'm his rival.
N & H: Hehehehehehehehe
Narrator: Warning, in this last part, our main characters are not the same size. Hagane is probably shorter.
Hagane: Do you really have to mention it? Do you want to die or something? Sheesh...