#//The reason Diluc was angry was BC he cared; BC it was so cemented that Kae was one of them; he never would have seen the betrayal coming

[dutybcrne]

v; i keep my ideals alive ( .bnha verse; kaeya. )

         Kaeya was born in the nation of Khaenri'ah, an island off the coast of Sumeru, possessing an Ice Quirk he inherited from his mother’s family. With Khaenri’ah being a nation without official Pro-heroes, the law enforcement was mostly taken care of by volunteers, Quirkless and Quirked, known as the Black Serpents. The crime rate was minimal if at all and all was peaceful, until a group of people amid those who helped govern the nation became seduced by AFO's promises of power in the world he would rule. This group would become the Abyss Order and their dealings with AFO through the years as well as their actions in his name after he was arrested by All Might would eventually bring the attention of the Teyvat Union as a whole and thus the Seven would be dispatched to dispose of them. Due to miscommunication, the Seven would end up combating the Black Serpents and allow the Abyss Order more time to complete their devices, but in the end, the ensuing battle would destroy them anyway, along with horrifically devastating the nation in the process as each of the highly volatile energy cores ruptured.

         Kaeya and his father were lucky enough to flee before the worst of the calamity occurred, and journeyed across the nations of the Teyvat Union, ultimately coming to rest in Mondstadt, far from their home. Because his father had been a prominent leading member in Khaenri’ah, the man decided that Kaeya was to be left on his own in Mond, to grant him the opportunity at a better life in being taken in by one of the families there. The man’s parting words to his on were a plea to never let himself forget his identity as Khaenri’ahn and where he came from, though Kaeya would come to misinterpret and tie it to the Abyss Order, considering many of the leadership–and many of Kaeya’s other family members–happened to be aligned to the Abyss Order’s dealings, as well as rumors circulating the nation he ended up internalizing. 

          Was he meant to be their spy? Here, in his new home? Was that his true purpose? This would remain a constant thought looming in Kaeya’s mind, even living an otherwise idyllic life in Mondstadt.

         Being taken in by the Ragnvindrs and raised alongside the prominent, promising young lad who aspired to be the nation’s top hero, Kaeya let himself be molded into the boy’s support. He would take every lesson and training seriously, enough to catch up and be admitted to the same academy as Diluc. To take each rigorous class right alongside him and excel, using his Ice Quirk to ensure the boy’s fire never burned out or too far. Always being Diluc’s second, his right hand, the other half to the dynamic team they would form and aspire to maintain into their official careers. And Kaeya so desperately wanted that future. So desperately wanted to keep this home and life he had made here.

          But how could he rest easy, with the ever-lurking shadow of his supposed purpose warring with his growing attachment for the people and nation he came to love? The answer came sooner than later, as his inner turmoil ultimately came to a head at Crepus’s death due to a deadly support device manufactured by the Fatui organization. Betrayed that even the ever-righteous man he looked up and begun to consider like a father to would have stooped so low and be swayed by such sinister powers, Kaeya would admit his family ties to the Abyss Order to Diluc. To force him to make the choice for him, staying in Mondstadt or going home and rejoin his family, ideally cutting the strongest attachment he had at the very least, as he himself would never have the will nor strength to do so personally. 

         The rest is history.

         Kaeya’s purpose within the Favonian Hero Organization does involve to typical PR and heroism, but he also took it upon himself to have an additional purpose–to be the sort of hero unafraid of dirtying and bloodying their hands in the name of the people’s safety. All behind the Organization’s back ( though some do suspect what he gets up to ), and well-hidden from the eyes of the media, of course.

         Due to his Khaenri’ahn upbringing and hearing his father’s say through his most impressionable years, he’d long since held ill regard for heroes and the Commissions running them, only indulging Diluc’s admiration for them without mockery nor disdain out of attachment to the boy. Their rules and regulations were always far too restricting, much too inefficient to do their beloved nation any good. Always letting villains slip through the cracks in their defenses and hurt people many heroes wouldn’t even care to give a second glance. Now that Kaeya was freer of and his purpose wrenched asunder by his confrontation with Diluc, he would give himself the indispensable role of personally seeing to getting rid of villains, vigilantes, and even those of the Favonian Commission he noted were corrupt. Anyone deemed a threat to Mondstadt’s safety would fall at his hand, dealt with swiftly and quietly, with no loose ends to spare. He cares not what he has to do to ensure Mond’s safety, never worried of what consequences he would face if caught. Not that he ever worried he would be, but that is a bridge he’ll cross when he comes to it. Never one to give anything but his all, he fully intends to protect the place he’s called home.

          Even if certain fears still linger in mind. Still, he can hope his dedication would be enough to tide him through them all. It’s always been one of his strongest, most defining traits, after all.