New Yevon New Yevon is a political organization in " Final Fantasy X - 2 " . Trema , a former Yevon monk , formed the party from the shattered remains of the Yevon religion half a year after Sin ' s defeat . When Spira ns began their new lives without fear after the start of the Eternal Calm , many felt the world was moving along too fast and so Trema founded New Yevon with the intent of keeping the moral teachings of the old faith , but would gradually introduce new ways of thinking . The group is based out of the city of Bevelle , and their motto is " One thing at a time . " Story . In the year between Sin ' s defeat and New Yevon ' s formation , Trema headed a group of sphere hunter s known as The Seekers , who ushered in the sphere hunting craze that swept Spira by the time New Yevon was officially formed . Sphere hunting became a popular craze for searching Spira for lost spheres . Trema founded New Yevon to bring stability back to Bevelle and those people who had fallen out of touch . Unbeknown to everyone , however , Trema was an unsent who had falsified his title as an " Unaffiliated Yevon Priest " to infiltrate the heart of Yevon . Trema ' s true objective for having people collect spheres was not to " find the truths of Spira , " but to erase the past . He took over the Monster Arena from Lord Mi ' ihen ( who had founded it 800 years ago ) to carry on his aspirations of using the facility to train the Crusaders . Trema observed that whenever Sin was defeated , the Crusaders , who now had nowhere to use their training , sought conflicts , which caused him great despair . He surmised that what they needed was not physical , but spiritual training and labeled himself a Yevonite , began urging people to " pursue the truth " ( through sphere hunting ) and founded New Yevon . As his philosophy was that " people must rid themselves of the past to become stronger , " Trema took the spheres New Yevon had gathered and destroyed them in the depths of Bevelle in a place called Via Infinito , his rationale being that people must discard the past to face the future . There have been three leaders of New Yevon in the two years since Sin ' s fall : Trema , who disappeared shortly after founding the group ; an unnamed chairman , who was asked to resign when his practices steered the group in an undesirable direction ; and Baralai , the current leader , or " Praetor . " New Yevon has come into conflict with the Youth League , chiefly because the latter suspects Bevelle of continuing the furtive practices of the Yevon faith , especially keeping secrets from the people of Spira . It is revealed they are concealing at least one secret : the existence of Vegnagun . When the Gullwings visit Bevelle , Yuna is hesitant , as she turned down the previous chairman ' s offer of an arranged marriage with his son to garner public support for New Yevon . Her worries are quelled upon discovering Baralai now heads the party . An " awesome sphere " surfaces in Kilika where the Youth League and New Yevon compete over its ownership . The Gullwings snatch the sphere and discover it contains images of Vegnagun . Deciding to return the sphere , Yuna must decide whom to relinquish it to . If she gives it to New Yevon she gains their allegiance , but if she gives it to Youth League , New Yevon brands her their enemy . Upon investigating the Bevelle Underground , the Gullwings find Vegnagun has fled to the Farplane , and Baralai , now possessed by a malevolent unsent called Shuyin , follows with the intent of using the weapon to obliterate Spira . His friends Nooj and Gippal follow and as the factions are left leaderless Spira falls into turmoil . To prevent an all - out civil war , the Gullwings organize a concert on the Thunder Plains to reunite everyone , and when Lenne ' s final memories are broadcast for the crowd people come to see the futility of war and peace returns to Spira . The Gullwings find Trema in the deepest reaches of Via Infinito but discover he is an unsent and battle him . After Shuyin and Vegnagun have been felled , Baralai vacillated over disbanding New Yevon , but in the end decided not to . Musical themes . The theme of New Yevon is called " New Yevon Party " and it plays as the background music to Bevelle .