Iru - Kuiru Iru - Kuiru is a non - playable Tarutaru white mage from " Final Fantasy XI " . He was minister of the Federation of Windurst ' s Rhinostery ten years before the Crystal War . He was also a member of the fateful Multinational Expedition to the Northlands . His pupil , Rukususu , continues to investigate his work in the present day . Story . Iru - Kuiru generated controversy by suggesting that Windurst ' s founders had not been led to Sarutabaruta by a star , as their history told , but by a more advanced civilization . His colleagues preferred to think that celestial guidance had not only built the Federation but also continued to protect it in their time . Their disapproval did not dull Iru - Kuiru ' s interest in the ancient Zilart and Kuluu , however . The Republic of Bastok approached Windurst to propose a survey of Fei ' Yin , a notable Zilart ruin and valuable area for study . Iru - Kuiru joined the expedition and hired Yow Rabntah , a wayfaring Mithra ranger , to accompany him to Quon . There they joined with Francmage M Mistalle , a San d ' Orian knight , and three Mythril Musketeers : the warrior Ulrich , the monk Cornelia , and the swordsman Raogrimm . The expedition found Fei ' Yin swarming with ghosts and strange machines . Although the site proved valuable to Iru - Kuiru ' s research , the party failed to achieve its mission to investigate the power slumbering beneath the ruins . Having given up on the city , they ventured west to see what might lie in Xarcabard . As Iru - Kuiru and Rabntah debated with Francmage about whether this detour was worthwhile they were approached by a frantic Ulrich . He claimed that the Musketeers had been attacked by fiends and that Raogrimm and Cornelia had fallen into a crevice . They hurried to the scene but found no trace of their lost allies . Iru - Kuiru believed there were more places to look but his companions elected to cut their losses and withdraw . The expedition disbanded and its members returned to their respective homelands . Shortly after Iru - Kuiru returned to Windurst he was banished from the Rhinostery for unspecified reasons . Inspired by something he ' d seen in Fei ' Yin , he put the Federation behind him and journeyed south to Elshimo . Alone in the jungle , Iru - Kuiru tempted fate by exploring the Temple of Uggalepih , a Tonberry - infested ruin . It was not the knives of these diminutive Beastmen that threatened him , however . A massive demon , the Shadow Lord , appeared before the wandering mage . Born from Raogrimm ' s rage and thirsty for vengeance against those who had left the swordsman to die in Xarcabard , the Shadow Lord murdered Iru - Kuiru . Present Day . Thirty years pass but Iru - Kuiru does not find peace in death . He drifts incorporeally between Vana ' diel and the dreamworld of Dynamis . Attempting to exert some influence on the living , he nudges his former student , Rukususu , to the place where he had died . She learns that Iru - Kuiru had been right about Windurst , it had indeed been founded with assistance from the Kuluu rather than a star , but chooses not to publicize her findings . Around this time a threat begins to emerge in the dreamworld . Though the Shadow Lord had been vanquished and Raogrimm freed from his rage , a piece of the demon had taken hold in Dynamis and grown to enormous strength . The spirit of Raogrimm , separated from this new Shadow Lord but being pulled toward it , searches for aid among those that had defeated his earthly body . When he is unable to rally such champions himself the ghosts of the other expedition members take up the cause in his place . Though Iru - Kuiru had been murdered by the monster that Raogrimm became , he accepts responsibility for allowing the circumstances that created the Shadow Lord . To atone he guides the Adventurer through the dreamworld ' s representation of Windurst on their road to destroy Raogrimm ' s dark counterpart . When this " Dynamis Lord " falls , the true ruler of that plane , Diabolos , speaks to Raogrimm . A divided soul cannot leave the dreamworld and the swordsman is inevitably separated from his raging alter ego . Diabolos therefore assigns him to stand watch over Dynamis until a day when hatred no longer exists . The other members of the expedition surprise Raogrimm by joining in this task . He had not expected their company after taking their lives with his own hands . For his part , Iru - Kuiru is too excited at the prospect of studying Diabolos to be held back . The Tarutaru therefore commits to eternal vigilance alongside his former companions .