Kazusa Yamashiro


In the first two episodes, she was introduce as a student and Yui's classmate and rival at the Imperial Guard Training Academy. Unlike Yui, her family does not belong to any shogunate family. Instead, her family is known to produce superb TSF pilots. In episode 2, she died while retreating from the BETA's onslaught together with Yui and the rest of her classmates. Her TSF crashed and she was eventually eaten by Tank-Class BETAs. (Source: Otaku-streamers)