Sorry, I had a silly thought: What role would WTL!Hisana play of she was missed by the shinigami on duty for the tsunami aftermath and ended up Hollowfied? Would she be a raving lunatic? Join Aizen's Arrancar? Quietly instill rebellion in Hueco Mundo? Say, "Fuck it," and sneak into Rukongai to steal her sister? I'm honestly very curious.
Realistically if she felt herself turning into a hollow, she would make sure she was physically as far away from Rukia as possible. She would lose her humanity, yes– by definition, that’s what the birth of a hollow is. But she’d also gain some of it back eventually; either by becoming a natural Arrancar or one of Aizen’s hogyoku-fied ones.
If we’re talking crack though, the thought of a hollowfied Hisana who fails at being a hollow amuses me greatly. She loses most of her memories and suffers the same constant hunger that all hollows do but like…misinterprets it entirely. So here you have tiny baby hollow Hisana wandering the endless dunes of Hueco Mundo, occasionally popping into the world of the living to steal lollipops (the one human food that temporarily makes her forget her hunger, oddly enough). Eventually she runs into Coyote and Lilinette Stark who cannot believe that anyone can be so…so bad at being bad.
“I should put you out of your misery,” Lilinette says in disbelief. “This is disgusting. I’ve never seen anything so pathetic. You’re a disgrace to all hollows simply by being alive.”
The lollipop-addicted moron glares sullenly at her, cheeks ridiculously puffed out by the melon-sized lollipop in her mouth. Then slowly, deliberately, she reaches into her shoulder bag (and what kind of hollow wears a shoulder bag? Embroidered with strawberries, no less?! Had she no shame?) and pulls out yet another lollipop, with a remarkable resemblance to Lilinette’s head.
And proceeds to bite down on it. Loudly.
“Why, you–!” Lilinette curses as Stark grabs her arm, keeping her from murdering little Miss Too-Good-for-Cannibalism.
“Calm down, Lilinette,” he sighs before turning to look at the sugar-obsessed brat. “And you. You are coming with us.”
The candy-sucking idiot chokes on her lollipop. Good, Lilinette thinks vindictively.
“Welcome to the gang kid,” Lilinette smiles viciously. Her grin only widens when Marshmallow-for-Brains takes a wary step back. “We’re gonna teach you how to hollow if it’s the last thing we do.”