#aibya

Me: Nah, I don't ship it. They are fucking weird!

This headcanon pertains to the events surrounding the escalation and execution of the Aizen/Byakuya ship with deumultima. Please note that while the events are canon in this respective relationship/verse, this headcanon details them from Byakuya's POV. The events covered in this headcanon are their meeting, up to Aizen's rebellion.

    Kuchiki Byakuya met Aizen Sousuke in Rukongai whilst accompanying his father, Kuchiki Soujun, on his annual May visitation to the citizens that lived under the Kuchiki Family's jurisdiction, respectively. Their age difference was subtle; the ravenette just reaching a hundred years, and the brunette having been Byakuya's age fifty years prior*. Byakuya's young eagerness and overall passionate nature having been demonstrated, it did not take him long to bore of political action necessary on behalf of his father's visitation. Light rummaging around a foreign area would not have daunted him in the least, especially when he was fortunate enough to make such a spirited acquaintance. And through this acquaintance, the young ravenette truly grasped at the world that was the rukon districts: poverty, disease, hunger, even a lack of clean water seemed to plague every household. The young boy was inspired to do what he must in order to help those outside the walls, due to the friendship found with a common citizen and a legacy his father left behind. Byakuya and Aizen's time together in this stage of their lives was indeed brief, for Byakuya left with his father to return to their illustrious estate a mere few days after their arrival. The young ravenette begrudgingly left his friend behind, fearful of not being able to pursue one of the most intimate experiences he had beheld     but was quickly told to dismiss such things on behalf of his grandfather in light of more pressing matters.

    Byakuya did not see Sousuke again for another fifty years. Now a teenager, he was now pressed with newfound intentions: succeeding his grandfather, and fulfilling the expectations placed upon him by that of his elders and the elite. Aizen Sousuke had recently been appointed to gobantai-fukutaichou, and more specifically, had begun to develop the resources that would eventually lead to the first hollowfications. As detailed, Hirako Shinji, the gobantai-taichou, did not allow for the brunette to be kept out of his sight so long as it remained reasonable. And so, when Hirako Shinji needed to discuss something of import with the rokubantai-taichou, Kuchiki Ginrei, he instructed his fukutaichou to accompany him. However, as he did so, he was then relieved from duty temporarily (for whatever was to be spoken was not for his likeness) and found the familiar sight of the now maturing ravenette having fallen into a koi pond (his shouting having been the allure). And thus, Byakuya and Sousuke were reunited after a fifty year absence. Continuing throughout Byakuya's development, from teenager to young adult, the ravenette continued to see his friend whenever available    attracted to the sort of freedom he had always felt in Aizen's presence, even when they had both been young. Just as well, Sousuke continued to help Byakuya further his combatant expertise and whilst doing so, resolved with a lingering distaste and frightful yearning to always keep the ravenette's presence close to his own. In short, the years following their reunion escalated their relationship to the point of a chaste, but passionate devotion     one that was routinely tested in the century to come.

    In the years following Urahara Kisuke's, Shihouin Yoruichi's, and the hollowfication victims' leaving of the Soul Society (an estimate of fifty years), it can be said that Byakuya and Sousuke's relationship began to deteriorate. As the future Kuchiki Clan leader and rokubantai-taichou, Byakuya was no ordinary character and he easily bypassed the unranked officers and was immediately established as the rokubantai-fukutaichou under his grandfather when deemed worthy. Similarly, unknown to Byakuya, Sousuke was in the process of receiving a promotion of his own: the captaincy. Furthermore, in the time leading up to Byakuya's establishment as a fukutaichou, the brunette had become increasingly agitated with the ravenette's change of demeanor and overall persona (or as Byakuya called it, his maturity into an individual the Kuchiki would accept). This indifference having led to a distancing betwixt them, Sousuke resolved to leave Byakuya in the dark in regards to his promotion     which ended quite disdainfully, with the young nobleman making an episode of it when greeted with the sight of the newly appointed gobantai-taichou. In turn, Byakuya resolved to keep his traditional visitations to Rukongai separate from Sousuke's knowledge, including the expanding relationship he had found with a woman named Hisana, whom he felt that he could benefit greatly by making her his wife*. And although the distance betwixt he and Aizen had expanded greatly, Byakuya could not help but indulge himself into knowing whether Sousuke had ever truly cared for him or not. Thus, after having learned of Byakuya's potential marriage, the brunette paid him a most visually indifferent visitation the night prior, at which time the young ravenette demanded: "Do you love me?" and the brunette replied that he did not.

    Having each interpreted the other's actions to otherwise be rejection, the distance betwixt them became otherwise absolute, despite it being a painful burden upon them both. As the next few years elapsed throughout Byakuya's otherwise deteriorating marriage, the original affair became an otherwise strained, placid friendship. While they remained quaint, and fair to one another, the atmosphere that encompassed the duo was heavy with a palpable tension that went unresolved until Hisana breathed her last. For Aizen Sousuke attended the funeral and welcomed the widowed Kuchiki Byakuya's grip upon his fingers and forearm. Post their brief interaction at the funeral, the duo began to rekindle what had been lost in their once unique connection. However, the next time it was severed would be on Aizen Sousuke's behalf. For the night prior to when the brunette was to carry out his imminent scheme, he paid a last visitation to the ravenette's manor, coupled with him, and told him that he would merely "be going away" and "be otherwise occupied", and then brushed his lips across the pale forehead in an effort to render him into a comatose like state to prevent any further distractions until the following morning.

*The time scale references 10 years in Seireitei to be the equivalent of one year in the human in aging process alone i.e. a shinigami that is 150 is physically 15. Kuchiki Byakuya was 100 when meeting the 150 year old Aizen Sousuke.