 After Yuna breaks up with him, Tidus helps her on a quest to defeat a reborn Sin.Tetsuya Nomura made a revision of Tidus's design for this game, hinting it will be used in a possible "Final Fantasy X-3".He also appears in games outside the "Final Fantasy X" fictional universe, and a younger version is a friend of the protagonists Sora and Riku in the "Kingdom Hearts" series.