Note: I do Not own bleach, This is an Au of bleach (Alternate Universe) of where Aizen never existed, please enjoy
"Talking."
'Internal talking.'
"Mysterious voice #1"
"Mysterious voice #2"
(Flashback)
[ Construction Site ]
The red-haired man looked down at the being standing where the Hollow was, he saw the being there eat something after he felt the Hollow's energy dissipate, though he couldn't get a good look at the item, nor the person, only his white coat, and his silver-white hair, the man turned around, the swordsman was shocked, he saw a piece of white on his face, and he could sense his lingering energy, he was no shinigami, he was an Arrancar, the red-headed man dashed at him, "What are you doing here Arrancar?" Zane blocked his sword, "What am I doing here? Arrancar?" The red-headed shinigami jumped back, "You are not fooling anyone, I see your mask fragment in full view!" Zane put a hand on his face and felt a boney structure on his left cheek, he looked in the blade's reflection, it was white and had teeth with a large fang, "Whoa." was the only thing Zane could say. the red-headed shinigami once again jumped towards Zane, as he once again blocked, "Wait, who are you? what are you? what am I?" the red-headed shinigami kept his sword on the Arrancar's, "What do you mean? I'm a shinigami, you are an Arrancar. Are you dumb, or pretending?" Zane stood dumbfounded, 'did he call me dumb after trying to kill me?' the red-headed shinigami also stood dumbfounded, "Wait you don't even know what you are?" the red-headed shinigami looked at The Arrancar Confused, Zane looked down, 'I just got these abilities like a minute ago, so no I don't.' The red-haired shinigami pointed his sword, towards the Arrancar, "that doesn't make sense, Arrancar are hollows who take off their mask, they cant be born, right?" Zane felt an immense pressure on him, he felt stronger, hungrier, impatient of this 'Shinigami's' antics he shook his head and sheathed his blade, then turned to another power surge that felt like the one he had dealt with, "Look, 'shinigami' if you don't mind I have places to be and things to eat, I'm gonna kill more of those monsters, k?" the red-haired shinigami felt offended and curious, "At least tell me your name." Zane turned his head to the man, "My name is Zane, What's yours" The man sheathed his blade, (due to Zane's spiritual energy being weaker than his own) and that the fact that he was slaying hollows made his job easier, "My name is Renji Abarai, you should remember it well" and with the sounds of Sonido and flash step they went their separate paths.
[ 5 hours later ]
Zane has eaten many hollows and absorbed their souls, no matter what they were doing, he felt so good eating them, and with the help of the voice inside his head, he has learned a fair few moves, just to keep the hollows (that he just learned what they were) on their toes, and he found that with every mask he ate he felt stronger yet wilder, and his fighting style has improved drastically, relying on pure fighting instinct, the more he ate the stronger, he was about to deliver the final blow to a 4 legged hollow, looking like a lizard, until he saw a red flash, the Lizard hollow dissipated, it was unusual for Zane, usually when he killed hollows, the mask dropped from where it was, maybe it was an Arrancar thing? Renji spoke up towards the Arrancar, "Why are you devouring Hollow masks, I thought arrancars cant evolve?" Zane felt the man's spiritual pressure for a while, but he didn't do anything, because he simply wasn't strong enough for him to go toe to toe with him, but he noticed that the man's sword has changed from a katana to a strange form, it emitted a strong aura, "What happened to your sword?" the man looked at his sword, "It's in its Shikai. HEY, DON'T DODGE THE QUESTION!" Zane looked at his own sword and zoned out, 'Can mine use a "Shikai" ?' Renji snapped his whip-like sword, near Zane's feet, which Zane jumped. "Are you gonna answer me?" Zane looked at him, "I don't know, the guy in my head is telling me to." pointing to his head, Renji looked at him like Zane was dumb, "You mean your Zanpakto Spirit?" Zane looked at Renji like he's crazy, "A Zanpak-What?" Renji facepalmed, "A Zanpakto is a shinigami or in your case, an Arrancar's Weapon" Zane just nodded and listened. Renji looked at the Arrancar, What would the Soul Society say about this? They would probably kill him and the Arrancar for thinking he was betraying them, he should kill the Arrancar, yet he seems like a good Arrancar and seems at least somewhat sane, and strangely friendly and kinda reminds Renji of his younger self, confused with Zanpakto's and what Kido and Reiastu were, He knew what it was like learning what the spiritual world, it's hard and confusing, he took pity on the Arrancar, "And your Zanpakto Spirit is your physical manifestation of said Zanpakto" Zane just nodded, he was feeling lightheaded and was feeling uneasy like he would collapse, he half-way understood Renji, "Uh-huh, can I sit down?" Zane Asked, having a terrible headache, Renji looked at him, "Sure?" Zane sat down and put a hand on his head, he felt his form slipping, and then his coat and mask fragment turned to nothing, and dissipated, leaving his normal form, Renji stood, Awe-struck, "YOU'RE A HUMAN?"