Naturally being told that a not only younger but also weaker opponent had bested them in a 4v1 situation, without the need to use any spirit techniques, made the captain as well as his remaining subordinate freeze for a second.
The captain especially refused to believe it, his original target wasn't Nina but Lina after all, so if he was being overwhelmed to this point then… he had no chance against Lina to begin with.
The problem is that the other option, which would that she was able to use spirit techniques without the need to call out their names, was even worse.
He had no way to know that let alone them, but even Nina's older sisters were surprised by the strong sensation they felt coming from their younger sister's battlefield.