Affection mechanics Affection mechanics , referred to as relationship figure in the Piggyback guide , is a hidden gameplay element that governs certain cutscenes during " Final Fantasy X " . Tidus ' s actions with other party members throughout the game can decide which party member talks to Tidus in cutscenes as well as who throws the blitzball during Tidus ' s Overdrive Blitz Ace . How each character is chosen is based upon a hidden " affection " value in the game ' s code . All of the main characters ( except Tidus ) have an affection value . At the beginning of the game , all characters ' affection values start at zero . Decisions . Throughout the game there are times where Tidus ' s actions can increase or decrease other party members ' affection value . On the field . During times where other party members are spread out across the area , the first party member Tidus talks to will increase their affection value . All other subsequent conversations with other party members in the same area will have no effect on their affection values . The amount at which the affection value increase will vary by party member , as shown in the following table : Cutscenes . There are four cutscenes that are affected by affection mechanics . Whoever has the highest affection value at the time the cutscene takes place will be the one chosen to talk to Tidus . The first cutscene occurs after Yuna enters Seymour ' s mansion in Guadosalam . When the party breaks up , either Lulu or Rikku will talk to Tidus . Once the conversation is finished , Tidus can talk to the selected party member two more times for more cutscenes . In case of a tie Lulu takes priority . The second cutscene occurs after the Crawler is defeated . Either Lulu , Rikku , Auron or Kimahri will accompany Tidus on the Al Bhed machina sled to Macalania Temple . In case of a tie , Lulu has priority , followed by Rikku , then Auron , then finally Kimahri . The third cutscene occurs on the " Fahrenheit " , after the party has defeated both of Sin ' s fins . The party member with the highest affection value will speak to Tidus before jumping off the airship prior to the battle with Sin ' s Core . In case of a tie , Yuna has priority , followed by Auron , then Kimahri , then Wakka , then Lulu , and finally Rikku . The fourth cutscene occurs on the airship ' s bridge after the battle with Sin ' s Core , but before the final battle against Sin . The party member with the highest affection value will speak to Tidus after Brother ' s English conversation with Tidus . In case of a tie , priorities are the same as with the third cutscene . Additionally , affection mechanics govern who throws the blitzball during Tidus ' s Overdrive Blitz Ace . Only Yuna , Lulu and Rikku can be selected to throw the blitzball , with Yuna taking priority , followed by Lulu , then finally Rikku in case of a tie . If that character is absent due to story reasons , KO ' d , or petrified , the one with the next highest affection level throws Tidus the ball . If all three girls are unavailable , the ball comes out of nowhere . When Blitz Ace is performed underwater , if Rikku ' s affection level is lower than the other two girls ' , the ball also comes out of nowhere .