The Voided Heart - Sub!Leonardo X Reader

Savior

It all started...
...when the turtles are in serious trouble!

They are under captivity of the Foot leaders: Tiger Claw, Fishface, Rahzar, and Stockman. The place they were kept in is at a dark, abandoned building, only lit by the glow of mutagen above Leonardo's head. His brothers -- Raphael, Donatello, and Michelangelo -- lie shells together in rope tied around their arms and chest. They seemed to be near defeat.

"I will be kind enough to ask you again, turtle. Where is your master?" The assassin mutant tiger asked. "Tell me, and I promise your pathetic shell won't be peeled from your back."

Leo covered his fear and looked dead in his eyes. "I would rather you mess me up than have you know where we live."

"Leo, don't!" Donnie exclaimed, writhing in the ropes.

"Please, bro! You don't have to take that kind of risk!" Mikey yelled.

"Silence!" Tiger Claw shouted. "Foolish confidence can only lead to a futile consequence... If this is what you want, then have it be your fate." He tipped the vat over more, and the glowing ooze seeped above Leo's head.

Suddenly, a shadow swooped into the room, alerting the sensitive ears of Tiger Claw. He stopped and took the vat from his head, returning the drop.
"Did you hear that?" He asked his other goons.

"Yes, I did." Rahzar spoke, then started sniffing the air. "Someone else is here..."

"Huh?" Raph mumbled, looking around as well. Suddenly a frightened buzzing sound of Stockman made everyone turn his direction. Something was pulling at his wings, almost like it was trying to peel them off. It was the same shadow.

"Speak for yourself." A feminine voice was heard.

"Who are you?" Tiger Claw asked, pulling out one of his guns and shooting at that direction. It disappeared into the darkness again.

After a while of waiting, the same figure swooped in and knocked the other goons away from the turtles, enough to set them free. It slashed at the ropes with a swift movement and helped Leo up to his feet.
"Thank you... who are you?" He asked.

He did not get an answer as it jumped up the interior towards the glass ceiling.
"Uh, aren't ya gonna help?" Mikey asked, getting his nunchuks out.

"It's none of my concern." The same feminine voice said before vanishing outside.

"Dunno if that's rude or not..." Raph commented before going back to fighting the Foot. Before going into battle, Leo took a final glance at the exit the woman took.

That was... quite odd...