Yuuna Braska is a central character in the video game Final Fantasy X. She embarks on a pilgrimage to defeat Sin, a monstrous entity threatening the world of Spira. As a summoner, Yuuna is devoted to her duty and carries the legacy of her father, High Summoner Braska, who previously conquered Sin. Throughout her journey, she is accompanied by her guardians, including Tidus, who becomes her love interest. Yuuna's character is marked by her kindness, determination, and willingness to sacrifice herself for the greater good.