Ika Mazi
600 years ago..
Captain Anz Kuroi and Lieutenant Kokoro Nashi were working on a serum of sorts, a performance enhancer if you will.. They seeked to populate one body with the souls of not one, but two.. A Hollow Spirit, to go along with the already-existing spirit of the Zanpakuto.. Ika was always into these types of things, and as such he had agreed, hoping to find new power, to partake in the evolution of the Shinigami of the Gotei 13.. Unfortunately for all parties involved (but mostly Captain Anz..) they were unaware that the Hollowfication of a Shinigami, which caused a total and otherwise never before seen conflict on a spiritual level could lead to some.. Shall we say mental and emotional issues.. Ika screamed loudly, but in the sound-proof laboratory of squad 12 no one could hear.. Anz and Kokoro were on standby, hoping that they could seal off whatever the heck they had just created but.. an outburst of Reitsu was followed by Ika with his hands around their throats.. Ika had beaten Kokoro's head off the wall 30 times until he was unconscious in less than twenty seconds.. Anz?.. He was not as lucky. Ika put a Cero through his stomach, and ripped his entrails out... But by some miracle the sickness had not quite run it's course yet, and Ika passed out, incapable of taking on the burden of the power he had just inherited.. Kokoro woke to the Captains scouring the area for a Hollow capable of dispatching the three of them.. Anz's corpse was a mess, hung up by his own entrails after the hole was put in him.. Kokoro gave Ika the credit for saving them, and said that the Hollow had been dispatched.. He blamed Anz for creating a Hollow and the experiment going wrong..
This was believable given the parties involved, and Anz's death was not so much forgotten as it was overlooked and viewed as unworthy of investigation, given the plausible nature of what had been said.. From that day on, Ika's Reitsu seemed.. tainted?.. Over the next 300 years, Six other Captain to Vice Captain Level Shinigami became sick, much as Ika had been before the incident.. They survived, but their Reitsu was also tainted, just as his was.. There was no precedent, and it was not exactly something the Captain Commander could justify dealing with.. 6 Captain level fighters weren't exactly going to be executed without the utmost justification.. Several Seated Shinigami had went down with the same sickness that Ika and the others had went down with, but they were not lucky enough to survive it as the others were..
590 years ago..
Kokoro is sworn in as Captain of squad 12, much to the applause of his fellow Captains.. He was considered a bright mind and valuable asset in ALL combat operations, and as such his awkward demeanor was easily overlooked.
290 years ago..
A band of Gillian Class Hollows appeared by squad 12 barracks, Kokoro's interest was piqued for better or for worse, and he called all 6 of the Hollow-Shinigami hybrids to come deal with the problem.. He called them personally, hoping that others wouldn't appear, but this simply wasn't likely, and deep down?.. He knew it..
What happens next can be found in the forum post, and will be summarized in due time. But for now? Time to start the past event, The Hollowfication of the Vizards..