Through the Weapon Complete Domination Technique, Seiya saw the memories of the weapon's material... the White Dragon that had guarded the Human Realm.
The Northern White Dragons dwelled throughout the End Mountains that encircled the world. They were among the world's strongest benevolent Guardians, protecting the Human Realm from the Dark Territory's incursions.
Yet, to everyone's surprise, the true cause of death for the White Dragons, who belonged to the lawful good faction, was not at the hands of creatures from the Dark Territory. They had been slain by the Integrity Knights of the Axiom Church, who represented justice and light in the Human Realm.
Or, more precisely, the White Dragons had been killed by Integrity Knights under the orders of Administrator, the High Priest of the Axiom Church.
Seiya did not know much about Administrator, the High Priest of the Axiom Church.
After all, before this, Seiya had merely been a youth from a remote mountain village, while she was the lofty High Priest.
Only after arriving in the Dark Territory did Seiya learn that she seemed to be the strongest person in the Human Realm. Not only did she possess power comparable to that of a god, she was also the Human Realm's supreme ruler.
Administrator had killed the White Dragons because she had absolute confidence in victory against the Dark Territory's invasions.
At the same time, Administrator wanted to control all military power in the Human Realm, so she considered the White Dragons that guarded it an obstacle.
The White Dragons would not obey her commands, while the ignorant people worshipped those so-called guardian gods. That was detrimental to her rule, so the White Dragons had to die.
Honestly, when Seiya saw the White Dragon's memories through the Weapon Complete Domination Technique, he found it deeply ironic.