Which が is this?


> しばらくその場を動かず無為に時間を過ごし、リヴェリアが怪訝な色を顔に映しだした頃。何かを察知したように、アイズ **が** 剣を抜いた。

Could someone tell me what が this is? Is it exhaustive listing?

My translation would be: _As if sensing something, Aizu is the one who drew
her sword._




I don't know the grammatical classification of the meaning of "が" to be able
to tell you whether this is exhaustive listing or not, but I think your
translation is spot on. It is a particle attached to the subject アイズ, and the
use of "が" (as opposed to "は") puts an emphasis on Aizu, as opposed to other
people in the context. "Aizu is the one who ..." captures this sense well.

