Puzzle Pieces | RotTMNT x Reader (Oneshots/Headcanons)

"Babysitting" (Leo x little sister!reader)

Notes: Requested on Tumblr. Not proof read, and might have made it unintentionally a bit angstier than I hoped hehe. Enjoy!

      "Okay, Leo, it's your turn to babysit," Donnie said as he played around with the tech screen projected from his armband, using it to investigate further about the wild mutant activity going on upstate.
      "Oh, sure, I'll babysit" Leo started, inching a bit closer to Donnie "But if you three get pizza afterward without me - I mean us... We won't be happy turtles."
      "Yeah! I'll beat you all up!" Y/N exclaimed, jumping to the conversation and now standing next to Leo.
      "Uh-huh, sure, okay" Donnie mumbles, still focusing on his tech. Y/N reached up and tugged on the long ends of Leo's mask, pulling on it to get his attention. When he looked down at her, she smiled, latching onto him and climbing up his form, pulling herself on him and climbing up to sit on the top of his blue shell.
      Leo sighed, "I feel like you've been getting more and more rambunctious lately, [nickname]"
      "Nah, I'm just growing taller" She replied.
      "My calculations say at this rate she'll be as tall as Raph when she gets around our age... but regardless, we should get going," Donnie said, his tech screen dissipating and looking to Raph and Mikey so they can start heading out.
      "Haha, I'll be taller than you when I'm your age, Leo, you're such a loser!" Y/N teased, letting go of Leo and falling backward onto the floor.
      "Also, don't forget to set an alarm for 8, Leo, she's gonna need to eat by then and -" Raph started.
      "She can't remember for herself?" Leo asked.
      "Nope!" Y/N answered "Too lazy, and I don't have a phone yet"
      "Oh, and Y/N!" Mikey rushed over to Y/N, grabbing her face "do not watch the ending of season three without me, i have a sense It'll be really good, okay? Or else I will not be a happy turtle." Y/N simply nodded, feeling a shiver down her spine.
      "Okay, see ya!" Mikey headed towards the sewer exit first, followed by Raph.
      Donnie turned to Leo, "Remember to not let her on the surface, okay? The last thing she needs is to get hurt" He headed out as well.
      "Pfft, Donnie can be such a stick sometimes, I know you won't go above to the surface, especially without me, right, [nickname]?" Leo turned to Y/N.
      "Well... Why can't I go out again?" Y/N mumbled, focusing on playing with her fingers as she now said cross on the floor.
      Leo sat next to her, placing a hand on her shoulder, "You're too young to go by yourself, Y/N... you haven't had as much training as us, if something bad happens, you won't be able to hold your own... you know? It'd just be better if you don't go into the city with us in the first place."
      Y/N continued to look down and just nodded, "Yeah, I get it, that makes sense."
      "Great!" Leo stood up, "Now if you excuse me, I got some reading to catch up on, [nickname]"
      "Huh? You're not gonna hang out with me?" Y/N, looked up at Leo as if the tender moment between them hadn't happened. 'Does he really not care...or does he not know what he just said to me?'
      "Well, now that the bros aren't here it gives me some quiet time to read the Jupiter Jim special edition issue where he fights laser unicorns on Pluto! But don't worry, I'll be sure to hang out with you later tonight, okay? I gotta come out here to make you food anyway" He said, walking towards his room with his hands behind his head.
      Y/N nodded, getting up and wiping away some loose tears she tried to hold back, "Okay, that makes sense.. I'll just watch some My Little Pony then"
      "Sounds good, [nickname]!" Leo said dismissively as he locked himself away in his room. Y/N stood up, attempting to swallow away the knot in her throat that was getting tighter. She walks over to the recliner that Splinter was sleeping on, puts the My Little Pony DVDs in, and projects it on the white screen. She sat next to her father's chair, hugging herself as she sighed, and pressed play.
. . .
      Leo grumbled when he heard his alarm for making food for Y/N go off, pulling away the Jupiter Jim comic that was on top of his phone and stopping the alarm. "Okay, time to feed the rascal..." he mumbled, taking off his blanket and leaving his room to the kitchen.
      He prepared some frozen pasta in the run-down microwave, food stains, and splatters covering the appliance inside and out. "I'm making some leftover pasta for you, [nickname], Don't complain about it, 'cause I think it's the last edible thing in the kitchen" He yelled towards the living room, still facing the microwave as it headed up the frozen dish. He then opened the utensil drawer, "Now, do you want the big fork or the small fork? I know you love your small forks, but they're all in the sink and I don't feel like doing the dishes, and it's faster to eat it with a regular-sized fork, right?" He turned around and made his way to the living room,
      "Heard what I said? [nickname]?" He didn't see her anywhere. He looked around for her in the living room where My Little Pony was still playing.
      "Tell me that my friends are lying to me and avoiding me because they don't like my parties and they don't want to be my friends anymore!" A pink character said on screen that took his attention for a second, growing a bit more tense as he continued his search for Y/N. He checked her room, and all of her brother's rooms, and reluctantly, he checked the sewer opening, seeing it left ajar a bit.
      Leo smacked himself in the face, "Why'd she have to go up there of all places! Ugh if Raph finds out..." He races towards his room, getting the emergency tracker that Donnie had made previously in case of emergencies. He checked the tracker, "Where... where is that...?" He looked at the tracker, turning it upside-down and reading the text of Y/N's location "New Jersey?! How'd she manage to get all the way to New Jersey already?"
. . .
      In reality, following the train system, it was only a thirty-minute ride to a university in New Jersey, but Y/N was on the move. She jumped from building to building, albeit a bit clumsily.
      "Ah, that wind feels so nice! Ah, and the stars are so pretty!" Y/N said to herself, continuing to run and smile in the process, feeling freer than ever before - the feeling on the concrete on her feet, the wind in her face, the refreshing cool spring air in her face. She stopped on the last building of the block, looking up at the stray stars that peeked through the city smog.
      She took a seat at the edge of the building, tightening her loose mask and looking up to the stars. "If only Leo could enjoy this with me..."
      "Why didn't you just say that? That way I didn't have to go on this wild goose chase to find you, Y/N!" Leo yelled from across the building, trying to catch his breath. Y/N turned around, tensing a bit seeing Leo sweaty and tired from trying to find her, seeing him hold the black device with a purple screen that was glowing light.
      "What? You tracked me or something, Leo?" She said.
      "You left without telling me"
      "You were sleeping!"
      "That doesn't matter, Y/N!"
      "You would've gotten mad at me for wanting to go outside the lair..."
      "I wouldn't have, I promise. But you know the rules-"
      "I don't like the rules"
      "They're there for your safety, Y/N! You're not strong enough yet, we-"
      "But I made it here all by myself and I'm fine! You guys just..." Y/N sighed and took a seat, legs dangling over the edge of the building again. Leo walked over to her, sitting down next to her. "I feel like you guys make me seem weaker than I am... I can do things too, like cook for myself, go out, at least with you guys..."
      "We don't let you cook because with your speed you spill everything, make a mess, and put a fork in the microwave"
      "You guys didn't tell me it would explode! And you leave all your dishes out for bugs to lick at, you're messy too!"
      "...okay well to be fair I didn't make that rule, Raph did."
      "And I don't like that Raph won't let me do easy things, like using the vacuum and stuff!"
      "I think he's worried you'll explode that too... we could barely afford a new microwave, [nickname]"
      "Yeah... but, like, you guys don't trust me with things. Or myself. It makes me, um..." Y/N started growing a bit more nervous, the knot in her throat coming back, preventing her from speaking.
      "Sad? Is that what you mean?" Leo asked. Y/N nodded. Leo wrapped his arms around her, enveloping her in a tight hug, and she soon returned it, her eyes watering a bit.
      "I'm... sorry, Y/N. I suppose we've just seen you as our baby sister for too long.. You're growing up... and literally, too, I sure hope you don't end up being as tall as Raph, that's a bit scary to imagine. Regardless, I'm sorry... Why don't we go home and talk about this with our brothers, okay? I suppose the rest of them, including Raph, need to realize that you're out a baby anymore. Does that sound okay?"
His sister nodded, and slowly let go of the hug. Leo gave her a soft smile, wiping away the stray tears on her cheeks.
      "Let's go home, yeah? Before our brothers find out you snuck out, especially Raph... He'll go bananas. It's a long way home... how'd you find your way all the way to New Jersey anyway?" He asked, standing up and taking Y/N's hand in his.
      She signed to him as they journeyed home, 'I just followed where my heart took me.'

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