Yuna displays some changes in personality in Final Fantasy X-2: while still very kind-hearted and serious about her duties and putting others first, Yuna is more open and direct. However, her friends still occasionally tease her about her habit of being a pushover, for she can never turn her back on anyone's request for some form of aid, such acts of charity as these comprising the majority of the game's side-quests and missions. Her relationships from Final Fantasy X have given her a new look at life and — freed from the responsibilities and restrictions of her former role as summoner — she is presented as a much more free-spirited person.
Her purpose for travelling with the Gullwings, however, is mainly because she hopes to find more spheres that would link with the one Kimahri found, what she hopes is a clue that Tidus is alive. Her investigations eventually lead her into the plots of Shuyin and the various opposing factions in the post-Sin Spira, particularly those of the Youth League and New Yevon. The Gullwings in general — and Yuna in particular — seek to restore some sense of unity and peace to a dangerously divided world, as well as to stop forces which would seek to damage Spira even further. The player's actions throughout the course of the game determine whether or not Yuna ever manages to reunite with Tidus, a gift to her from the fayth as thanks for having saved the world a second time.