AN: Sorry this came out so late and if it's a crappy chapter but I plan to finish this story and not just leave it and laziness overtook me for a while so here you go.
Gin arrived quickly before the dazed teenager and Grimmjow before they could exit and handed Ichigo his zanpaktou. "I couldn't let Aizen see me out there, helping you. I'm not ready to risk my life yet. I'll be watching from afar. See ya Grimmy..." Then he was gone along with a white blur. Grimmjow gritted his teeth, something wasn't right ,something just wasn't right he could feel it. Ulquiorra's reiatsu wasn't exploding but it was near invisible to the senses.
Dashing outside as quickly as he could, with Ichigo limp in his arms, he saw Aizen squeezing his hand around Ulquiorra's throat with one hand lifting him up in the air. "Shit!" Grimmjow had to act. He thrust his feet into motion instantly getting as far away from Aizen as possible. Leaning Ichigo against the side of the castle he slid his back down the stone wall sitting in the sand as he slowly began to lose consciousness. "You're staying here for while, just stay conscious." With a nod from Ichigo, Grimmjow left automatically tackling Aizen to the ground. "Ulquiorra get out of here now! Get to the girl!" Ulquiorra coughed and coughed gasping for air rubbing his bruised neck before being able to get to his feet, and he was out of there just a blur,he stumbled into the sand and got himself together he was able to enter the cave Orihime was placed in and collapsed in a heap right beside her. She finally awoke and curled up next to him on her side unable to sit up attempting to heal him before she finally passed out right beside him.
Grimmjow punched Aizen in the face repeatedly not giving up, over and over each time faster and faster each time harder than the last until Aizen finally sent him flying through the air he skidded to a stop letting the white, gritty sand fly forth. It was degrading, he was letting himself get hit, it was just a game to him seeing someone fight with all their might only to be barely doing any damage at all. He was alone in this and only he could face his battles. No one else.
Aizen peered his eyes across the landscape until he spotted the drugged figure in the background ready to just pierce another hole in his heart. "Say goodbye Grimmjow..." Then all of a sudden he smashed Ichigo into the castle wall repeatedly grasping him around his throat watching the boy bleed, suffer and bruise. Before Grimmjow could even stand again Aizen threw his zanpaktou straight at him too fast to see and it pierced straight through his chest, missing his heart. "Bastard..." He groaned as he got dragged backwards by the momentum. Watching Aizen hurt Ichigo more and more as he became weaker only made him want to tear him down limb to limb.
His anger grew and grew until he was exerting reiatsu the blue aura changing his physical form into a black panther with blue eyes that just buried into the soul, covered in white steel plated armour. His eyes florescent against the night sky, and the moon light beaming off his pure white armour his giant fangs protruding from his mouth as though he was the extinct sabertooth tiger. This was his second resurreccion. The zanpaktou lay on the ground before him, no wounds existent on the panther's chest.
As Grimmjow ran at Aizen he could feel the power beneath his paws, it was infiltrating every part of his body until he felt like this was what he truly needed to become this was his truest form as an Arrancar. His reiatsu turned a devastatingly dark purple, and his eyes changed completely to the same colour with his claws yearning to be touched with the poisonous blood that ran through Aizen's veins. Seeing the purple stone in the middle of his chest Grimmjow extended his claws as his speed increased dug them in and ripping out the flesh and source of all his power in one foul swipe barely missing his heart. Ichigo fell to the ground and now it was just a one on one fight no games, just the both of them ready to kill each other. They were finally equals in this game whether Aizen kept the power that was embedded in the stone or not they were equals. "Who would have guessed the kitty would one day turn into a panther." Aizen daringly said just calling him forth into a battle of life and death, this battle would meet the outcome of whether the soul society lives or dies.