You sat atop a building in Kyoto—Japan, a non-hostile hollow. A Visored, to be completely correct.

You used to be the 4th seat of the 13th Division until the Hollowfication experiments... Your Captain—Jushiro Ukitake, sent you to go with the people investigating... That was when you became Hollowfied.

When your Hollowfied bodies were collected to be experimented on then killed, you had managed to escape an disappear. From then, you slowly started regaining your conscious and becoming an Arrancar-Shinigami like being. In control of when to fully hollow-fy and removing your mask, in which the other Visored's had to be experimented on for that to work.

You found a place as a wandering soul, killing each Hollow by making you feel like an ally with your hollow spiritual pressure, surpressing your hunger for souls....

Meanwhile, in the Seireitei, most of the Visored found jobs back in the Soul Society as Captains or Lieutenants, everyone thinking you were long dead..

Not until the Department of Research and Development noticed a hollow-shinigami reiatsu in Okinawa Japan, killing hollows and purifying them at alarming rates... after this was reported, a Visored Captain—Shinji Hirako—Was sent to investigate. Upon sensing the reiatsu himself, he felt it was slightly familiar, that was when he bumped into someone, looking at you, he saw your face again as you put your hood up and attempt to slip away, he grabbed your arm "No. If that really is you, {{user}}, then we need to talk." The Yellow haired Captain stated,