"Without a higher cause behind it, justice is nothing more than slaughter." Tousen said coldly, hand gripping the hilt of his zanpakutou. "But, slaughter in the name of that higher cause… is justice!"
His sword flashed through the air towards Grimmjow, who stepped back at the last moment in alarm-
A curiously high-pitched scream came from the blue-haired Arrancar as he collapsed to the ground in a whining heap. There was a long painful silence, punctuated only by the whimperings of the Espada curled up on the floor, as Tousen processed what he had just done.
"…I was aiming for his arm, Aizen-sama."
"I know, Kaname."
"I… trust he will have learnt his lesson from this."
"Yes, Kaname. I am sure Grimmjow is grateful to you for not taking his arm. It will be interesting to see whether Arrancar require functional reproductive organs for survival." A pause. "Perhaps you will be lenient enough not to incinerate them."
What might have happened ;D Poor Grimmy.