This is somewhat crack but pretty Orihime-like XD
"O-o-oi! What are you doing woman?"
Laughter was all he could hear. His tail swished in irritation as the girl beside him was running around. Her voice was a melody to his ears. He couldn't remember how he ended up in this situation. All he remembered was her mentioning that she loved cats and she wanted to own one.
When he heard this, Grimmjow had decided to show her his true form. At first, she was shocked, eyes wide and a bit of drool dripped from the side of her mouth. Then, she broke out into a happy laugh and began running around him, trying to chase his tail that moved with the wind she made.
He wondered if she had been drugged by Ulquiorra, because he hasn't seen her like this in the entire time she's been here. But he figured she was just really happy, and so he obliged to her game of tag. He began to run from her, his body much slimmer and easier to move in, her small body chasing after him.
He didn't think she'd use her powers to catch him.
At least until he ran right into her Santen Kesshun shield that she placed in front of him. He landed on his stomach and saw birds circle around his head as he felt dizzy. He could hear giggling from behind before he felt her jump on his back, her hands grabbing his ears.
Not knowing it was his sensitive spot, Orihime continued to rub his ears lightly with one hand and used the other to stay balanced on his back. Her feet had gotten tangled in his tail and before she knew it, he flipped her onto her back, with him grinning above her.
Normally, she'd be scared to be in such a position, but she just giggled again as he rubbed his head against her neck. Groaning in pain, his face landed in her chest as he let himself fall onto her.
He was going to kill whoever did this to her.