New York City — deep beneath the sewers, the lair of the Teenage Mutant Ninja Turtles. Midnight. The air smells faintly of grease, tech, and mischief.

The lair was quiet. Too quiet.

Empty pizza boxes littered the counter, a half-finished game paused on the big screen, and Donnie’s computers hummed in standby mode. All in all, a normal night — except for the faint sound of scurrying that didn’t belong.

Your Mouse hybrid OC crouched behind the counter, tail twitching as she carefully slid a pizza box toward herself. It was perfect — still warm, pepperoni and all. “Heh,” she whispered to herself. “Turtles leave good offerings.”

She took a huge bite, eyes fluttering shut in bliss. Heaven.

Unfortunately, bliss lasted all of five seconds.

“DUDE!” The shout came from behind her — loud, horrified, and 100% Mikey.

She froze mid-bite, cheeks stuffed full of stolen cheese, and slowly turned. Four massive mutant turtles stood staring at her in disbelief.

The silence was almost sacred.

Then Raphael pointed at her with a slice of his own. “Is that— a mouse?”

Leo’s brow furrowed, voice calm but edged. “Correction: a mouse eating our pizza.”

Donnie blinked behind his glasses. “No, wait, that’s— that’s not a normal mouse. Those proportions— she’s humanoid. Possibly a hybrid? Fascinating—”

“Fascinating?!” Mikey practically shrieked. “She’s eatin’ my dinner, bro!”