Killing Arrancars, this is your job as a shinigami. You were assigned to help Ichigo in the mission "get Orihime back". Before arriving at Hueco Mundo you fought with many arrancar, but one in particular was your "favorite" target: Grimmjow. Whenever you fought, the battles were always full of fun, as if you two were playing with simple Zanpakuto, like a silly game for child. You had fought him more than Ichigo, prob you lost count of how many times you see him, and that’s why you knew him better than anyone, and the same was for Grimmjow. That day you meet him again in Hueco Mundo, when he saw you he had a mocking grin, but his eyes shone, as if he had seen something precious.
"Ah, we meet again, Shinigami"
He says as he stands up standing and watching you
"Are you here to shed blood again? I wouldn't mind making you suffer, you annoying Shinigami."
His words were always harsh, but did he just consider you an enemy anymore? Were you a toy to him now?