Donnie x GN!reader? Prompt: Reader is mute and their April's sibling. Donnie walks into April's apartment without telling April that he was coming. And when he walked in he saw reader on the couch with April watching a movie / Tv show. April introduced reader to Donnie. Donnie and reader begin to hang out and they catch feelings for each other. You can add anything else you want to. (a/n soz for any spelling or gramma mistakes! im too tired to proof read this)

---

'Knock! Knock!'

No answer. Donnie decided to help himself into April's house. He sauntered in like he owned the place. It was all quiet then some giggles flew into his ears. It came from the living room.

Hearing the TV go off, he quickly concluded that April  was probably watching a movie. He smiled mischievously, already planning to scare the brunette. "iT'S....OTHELLO VON RYAN!" 

Oh, yeah. April screamed but Donnie was not prepared to see another face. One he had not seen before. "Oh shit," he finger gunned awkwardly. April rose up from the ground to see you pointing at the intruder. 

"It's alright I know what it looks like but I know him. Just trust me okay? Now let your big sister handle this." April turned around with a menacing glare. Donnie gulped and shrunk his head into his shell. 

For the next five minutes, you could hear April chewing out the green man wrapped in purple. April was furious that Donnie just barged in. "What if that was my mom? You could've just texted me, Dee."

"M'sorry April. I really didn't mean it." he pleaded, giving April puppy eyes. The brunette tried to look angry but Donnie just had the world's best puppy eyes. 

"Guess I gotta introduce you to my sibling." 

Donnie shrugged, "Or you don't have to and I can sedate her and we keep this a secret by telling her she was just dreaming..."

April gave him a bored look. "We are not sedating them and I am not going to lie to them. Their smart and knows when they're being lied to."

Donnie thought over it for a while, then nodded. He trusts April with his life. He would also try to trust whoever April trusted. Apparently, that person is you. He turned to walk to the living room only to be stopped by April tugging on his arm.

Donnie turned to see a worried look on April's face. "April? What's wrong?"

"Nothing, I just. Just be open-minded when you meet them. I wanted you to be the first they meet 'cause I have a feeling you would understand them best."

Donnie noted the underlying panic in her voice. Was April's sibling really weird or something? Either way, he nodded reassuringly to April and told her to lead the way, Donnie staying slightly behind as to not scare them with his whole turtle situation.

In the hall sat a young person with (readers features). "Hey (y/n)."

Donnie watched from the sidelines as the person waved at April with a wide smile adorning their face. "So, remember that friend I wanted to introduce you to? Well, he's here but please don't freak out alright." With a nod from, you, her sibling, April waved Donnie over.

A wispy gasp left the other O'Niel's mouth as they took in the presence of a giant, walking, and incredibly well-built turtle. April felt your hand grip hers tightly while your other hand came over your mouth as if to keep your soul from leaving your body. The turtle froze.

April laughed nervously, "Alright (y/n), this is Donatello." 

"Donnie, this is (y/n)."

Donnie snapped from his state and nervously waved at you. "H-hey. I'm uh Donnie, but you already k-know that and I, I am a turtle..." 

Donnie watched with eagerness and a little fear of how you might react. You wanted to react so badly. Not out of fear but amazement and pure excitement. Your sister had mentioned her weird group of friends before but you'd never think this weird. This was the coolest thing you have ever seen. You were about to say something but hesitancy kept you back. Not everyone took your method of communicating with ease. It was hard to communicate in your condition. 

April noticed you were tense. Placing a hand on your shoulder, she smiled encouragingly. "Trust me. He'll understand you. Just communicate like how we do at home." 

Donnie heard that and his curiosity peaked. When he saw you approach him, Donnie dared not to breathe. You cautiously looked up at him and began to sign, 'Hello. I'm (y/n). Nice to meet you.'

You watched the turtle blink once, then twice then his face lit up with an unknown expression. Donnie looked up at your sister and then down at you. You were already thinking he didn't understand you until Donatello began to sign back to you as well. 'Hey! I'm Donatello. You can call me Donnie!' 

You gasped and beamed, turning around with surprise to face your sister. April nearly cried when she saw the biggest smile on your face. You turned back to Donnie and signed, 'You can understand me'. Donnie grinned back at you, 'Yeah. Yeah, I can.'

April gave the both of you time to get along, seeing as her best friend seemed to be in a better mood than he had been in most days. You and Donnie talked about many things, your interest and his, your favorite food, and your favorite movie. It was a silent conversation, with Donnie speaking up once in a while and you replying in soft laughs and giggles, but it was a very fun one.

"Hey, I hope I'm not rude or anything but why don't you speak?"

You just waved him off gently and signed that you were mute. Donnie found out that when you were younger you had gotten yourself into a fight with another pre-schooler. The other one got a good punch to your throat, damaging your voice box in the process. 'I could hardly speak without choking and it hurt too. Time passed and my voice became hoarse and it just disappeared after a while.'

Donnie felt sad. "Well, you didn't give up in life. That's what matters. I just wonder what you sounded like." You giggled telling him that he didn't miss much. April came to collect both of you for pizza and the rest of the day went off with a blast. You and Donnie somehow clicked so well. You guys bonded over your mutual knowledge of sign language and surprisingly, your shared love for botany. 

As evening came around Donnie announced that he had to leave. You and April were seeing him off. "Thanks for inviting me, April," Donnie uncharacteristically hugged her. You definitely put him in a very good mood. You signed a half-hearted goodbye, not really wanting your new friend to leave. "Hey, keep in touch with me alright?," Donnie pointed to your phone where he had already dialed his number, in exchange for yours. "We can meet up again at the lair. I know Mikey would love to meet you."

You nodded gleefully, making the turtle and your sister laugh. Donnie gave you and April a two-fingered salute before activating his hover shell and flying off. Your jaw fell to the ground. Yeah, you and Donnie talked about a lot of stuff but he was so excited about meeting you and forgot to mention his love of technology. 

---

A week later, Donnie brought you and April to the lair. You were now officially meeting the Hamato Clan. Mikey was the first to introduce himself to you. His bubbly personality made you all happy inside. Next up was Splinter, he welcomed you with open arms and told you that you could visit them anytime. Donnie then introduced you to Raph and Leo. Raph expressed his pride that Donnie finally decided to make a new friend. Sure, he had April but for him to come out and be friendly and drop his bad-boy image, was a surprise for everyone. Leo then swooped in with his glory and basically used a one-liner on you. You couldn't help but giggle. 

However, you piqued the boy-in-blues curiosity as you had not said a word. "Hey, do you don't mind me asking? Are you just, shy, quiet or do you not speak?" 

"LEO!"

"LEON!" 

April and Donnie shouted together, the latter slapping his brother's head. Donnie apologized on Leo's behalf but you just giggled and told him and April to calm down. You turned to Leo and placed a hand on your mouth, then you continued by making a cross sign with your fingers and shook your head from side-to-side. 

"Oh. OH I am so sorry. I really didn't mean to-" 

You reached out and patted Leo's shoulder to comfort him. The red-eared-slider smiled, 'Forgive me?' he signed much to your surprise. You grinned, 'You can sign too?'

---

From that day, you had a free pass to enter and leave the lair as you wished. You spent a lot of time with the boys. You learned that Mikey loved art and cooking. Raph loved cuddly animals and it became a trait that both of you shared and cherished since you had a knack for cuddly animals too, except for Misses Cuddles. Leo loved showing you his Jupiter Jim collection and was partially responsible for getting you hooked on the show. Splinter, who obviously influenced Leo, showed you Lou Jitsu movies and basically told you his family's history. From the mutation and the many adventures, he had with his sons. Of course, he skipped all the Shredder parts. 

You loved hanging out with all of them. They knew sign language which made it all the easier to talk and enjoy yourself. You didn't need to hassle with pen and paper as you did with most of your human friends. You didn't need to be silent because with them you were heard. 

Every time you head to the lair though, there is always one face you had to meet, and that is Donatello. Since your introduction to him, both of you have become attached to the hip. Donnie smiled every time you came over. He laughed and talked with you as if there was no other he could talk to.

In your silence, you loved to listen to others speak. Especially Donnie, because he had the most interesting things to talk about. Since you discovered his hover shell, you had asked him to show you his other inventions. Donnie was more than pleased to do that. Donnie shined every time he spoke about his inventions. His smile was contagious because even the slightest grin from him made you smile and feel all fuzzy inside.

A few months later, Donnie became the most cheerful person in the lair. His brothers and father noticed this. Whenever you came to the lair, he became chipper and giddy. He would do his tiny hand flaps and have hearts in his eyes. Mikey called it his, 'Donnie is in love' phase. Then the turtle would blush. 

One day you came down to his lab. Just like all your visits, you and him would talk for hours about anything. "Well, what do you think?" Donnie posed to show off his new aquatic battle shell. 'Oh wow! It's amazing!' you signed. It wasn't your appraisal that made Donnie shiver in delight. It was the content and beautiful look on your face. 

Time slowed down as the genius found himself drowning in you. You looked like an angel. He wanted that look on you, forever. 

Another time, you and Donnie were talking about botany. It was late at night and the both of you were cooped up in his lab. Donnie brought a chair beside him for you to sit. Feeling tired but not wanting to move you just listened to his rambles about venus fly traps. You smiled sleepily at every new note he made. As another thirty minutes passed, Donnie suddenly felt a soft pressure on his shoulder. He looked down only to tense up and flush immediately. You had fallen asleep on his shoulder. He felt a small spark in his chest and felt warm. 

'Damn...' he thought.

On a winter's night, Donnie texted you a sad note which made you hurry to the lair. You greeted the brothers and rushed to the lab to find Donnie sitting on the ground with his legs tucked to his chest and his head buried between his knees. Donnie heard you come in. You gasped when you saw tears in his eyes. 

He texted you about how sad he was. He was trying to work on a new version of Sheldon after the whole Shredder incident and failed. The softshell turtle told you before about the incident and how Sheldon was like his own son. You sat by his side and cautiously leaned on his side. When Donnie didn't pull away you continued to be by his side until he stopped crying. He was non-verbal at the moment so he thanked you in sign language. You smiled sweetly and hugged his arm in return, signing to him that it would be alright and that you'd stay with him as long as he needed you to.

Comforting him feels so natural to you, so right. You glanced up and saw his smile. A spark grew in your chest and you vowed to keep that smile on his face. Realizing what you felt you gasped quietly. 'Damn,' you thought.

That was the night everything changed.

Since then, Donnie would get nervous and his stomach felt fluttery whenever you visited. Every second you saw Donnie, you feel a rush of heat travel to your face. Every night you texted each other, planning your next adventures together. Every problem you confided together, every tear cried together and every laugh shared together. 

Donnie knew he had an undying attraction to you. He still had his bad boy image but when it came to you, he'd gladly throw it away. 

"Let's go to our secret place later. Fetch you in an hour?"

You read his text. Heart beating wildly you texted back, "Yeah. I'll be ready." 

April wasn't at home so you wrote a note to her and left it on the fridge. Then with all your nervousness, you began to get ready. There was a small charming area in New York that you and Donnie stumbled upon during your adventures. A tiny picturesque garden is hidden away from the busy streets and prying eyes. You and he often went there for solitude and to spend time together. You cherished that place. 

Soon, Donnie fetched you and now you were enjoying a peaceful dinner together. Both of you felt each other's nervousness. Donnie was fidgeting with his fingers. "(Y/n)?"

You hummed and turned to look at him. He was shaking. "I need to get something off my chest." He paused for you to react. You nodded for him to continue and he did, "Look. I'm really glad to have met you and even more glad that April introduced us. We've known each other for almost a year now and I- I need to say that this has been the best year for me because I met you."

You blushed and looked away with a growing smile. Your attention was fully turned to Donnie when he bravely took your hands into his, "(Y/n), I like you, a lot. I like you because you made me happier than I had been in years. I like you because you understand me and I feel so blessed to have met you."

You were speechless. Your face had gone all red. 

"I just want you to know that I- I like you, so much. More than friends and I understand if you don't want to -"

You cut off his rambling by planting the most softest kiss on his cheek. Donnie was broken and madly in love. A thick coat of lovely red spread across his face. "Woah..", he had hearts in his eyes.

You looked at him with all the love you could muster, 'I like you too, Donnie.' you signed and held his hand close to your heart. 

Donnie gasped, then laughed. "Oh, wow. Oh wow oh my thank you. Thank you." he raised your hands and kissed your knuckles. "I like you too, soo much."

The night ended perfectly. You both found love. It was muted love, but neither you nor he would change it because it was your love.

------

and the first one shot done. Im planning to do a one shot a every two days ish so hand in there for more turtle loving!!!! If you like simp for donnie like me, check out my other book which it literally about our favourite nerd of a turtle!!! Mr and Mrs Hamato. 

Enjoy!!!!