Yua Sasaki is a 92nd Tootsuki Generation student. Like her fellow student Urara Kawashima, she is also an emcee for hosting important events occurring around and within Tootsuki Culinary Academy.
Yua Sasaki's personality resembles that of Megumi Tadokoro's, both being shy and meek. She is also easily intimidated. This is proven when Natsume Sendawara deems her questioning annoying, having to repeat herself, prompting Yua to quiver in fear.
(Source: Shokugeki no Souma Wikia)