Having recovered from his battle with Adou, Sekai heads for the Labs' workshop to repair the Build Burning Gundam, and encounters a mysterious girl. Thanks to the girl's advice, Sekai finishes repairing the Build Burning, and the next day he goes to the Labs' battle room with Mr. Ral for special training.
You, his only rival,
are also his teammate.
أنت هو منافسه الوحيد لكنك زميله في نفس الوقت
Du, sein Teamkamerad,
bist sein einziger Rivale.
Y tú, su único rival,
eres su compañero.
Son seul rival est son équipier.
Você é o único rival dele, e também
seu companheiro de equipe.