JayDick always female Dick au where Rachel 'Dixie' Grayson is very much so mommy and Jason can and will do literally anything she asks of him. Jason as Robin had always yearned for Dixie's affection more than anything (at first it was just bc he was seeking out any sort of maternal adjacent bond he could get and later evolved into a crush). Robin Jason was an absolute menace to everyone except for Dixie (and Alfred) who he would joke and play around with but was mostly just super sweet to (he behaved much more obediently when out with Nightwing than with Batman lol).
After his violent death and resurrection and Jason was convinced his family replaced him and never truely loved him he was devastated and went on to plan his revenge as the Red Hood. Everything was going according to plan once he got back to Gotham and started making moves as it's new crime lord until he saw Nightwing again. He thought his feelings for her had died with him but apparently they got resurrected right alongside him so he decided he'd just have to stay as far away from her as possible.
That plan failed spectacularly when he saw Dixie in the process of being captured by some Black Mask goons after getting injured protecting Tim. Everything went green and the next thing he knew the goons were splattered across the pavement (but still alive bc he knew killing them would make Dixie uncomfortable which his subconscious deemed unacceptable) and he was on a rooftop with Dixie cradled safely in his arms.
Meanwhile Dixie was wildly confused bc the man holding her was clearly the new crime lord that had recently shot up on Bruce's list of most dangerous rogues but he'd also just completely wiped out the goons trying to capture her and was now holding her so gently it felt like she was the most precious thing he'd ever come across in his life. While her brain was still buffering the man sat down and held her in his lap before barking at Robin (holy shit how did she forget about Tim!) to call the Batmobile to come pick her up since she was injured. Tim was clearly confused as well but did as told while the Red Hood began taking out emergency medical supplies (where the hell did they even come from? Did he have some sort of magical utility belt like Bruce??) and doing what he could to stop the bleeding from the cuts and stab wound she'd gotten in the fight.
Once her brain came back online she thanked him for the help and tried to subtly pry for information on why he was here in the first place. It didn't work bc as soon as Hood heard the engine of the Batmobile he scooped her back up and carried her to it while giving Robin strict instructions to not let her do anything but rest until she was fully healed. Tim was nodding seriously so she tried to protest but Hood only scoffed before launching into the guilt trip of the century saying that the whole situation had clearly scared Robin and he might get so caught up worrying about her that it distracted him on patrol and led to him getting hurt too. Tim nodded along enthusiastically while the Red Hood made sure she was comfortable in the back of the Batmobile (she's so glad it has a self driving feature bc she does not enjoy driving with an injured ankle). She was so dumfounded by the entire situation that she couldn't couldn't find the right words until she was back in the batcave with Bruce and Alfred helping her to the med bay...what the fuck???
Back in his safehouse Jason faceplanted on his bed and screamed into his pillow bc he definitely just fucked up his entire plan pulling that rescue stunt on Dixie.
After reviewing both her and Tim's domino footage more times she could count throughout her recovery she and Bruce still couldn't figure out why the Red Hood acted the way did. Bruce had tried approaching him as Batman only to get shot at until he left Crime Alley. Tim's attempt at approaching him as Robin didn't go much better since Hood promptly grabbed him by the scruff of his suit and tossed him at Batman waiting on the edge of the Alley. He then yelled at Batman for letting a child go into Crime Alley alone and gave him a countdown 10 seconds before he'd start shooting. They'd collectively agreed it would be best to wait for Dixie's recovery before trying to deal with Red Hood again.
Jason thought he'd finally shaken off the bats after another couple weeks without running into them until Nightwing cornered him on a rooftop. He tried to run away but immediately froze when he heard Dixie yell for him to stop. They were both quiet for a second (Dixie definitely hadn't expected him to actually listen to her) before Dixie stepped in front of him and firmly told him to stay so they could talk. Jason hunched in on himself a bit and started fidgeting but ultimately nodded. Dixie was absolutely stunned and confused bc the man in front of her looked like a giant puppy being scolded for misbehaving which did not match up with what she'd seen in the files of the Red Hood on the batcomputer.
She took a deep breath to gather herself before she started asking questions. The man clearly didn't want to answer any of them and tried to turn away but he turned back and seemed to shrink in on himself even further when she let out a frustrated sigh. It was kind of heartbreaking to watch so she decided to cut to the chase and asked him to take off the helmet bc he clearly knew her and she didn't appreciate not knowing him in return. To her surprise he let out what she could only describe as a whine before saying he didn't want to bc he knew she'd hate him and he didn't wanna see that on her face when she found out who he was (Jason was definitely screaming at himself in his head to stop bc this was embarrassing and he was supposed to be over his massive crush on Dixie but it's hard to fight instinct and his instincts are to do whatever Dixie wants lmao).
They went back and forth a bit but eventually Jason gave in and took the helmet off. He still had a domino on and refused to look at her head on but even after all this time there was no way Dixie wouldn't recognize her Little Wing. She let out a sob and dropped to her knees bc her Little Wing was dead so there was no way this could be him but Jason dropped to his knees too and immediately started asking if she was hurt and it was just so familiar that she couldn't help but hope that he'd somehow come back to her. After a very emotional crying session along with a trip to the batcave for a dna test to ensure it really was him and Dixie had her Little Wing back (she will absolutely not be letting him go ever again).
Things were a bit rocky at first since Jason had been manipulated into believing they didn't care about him (Dixie was furious about this and everything else she heard about his time in the league) but Dixie gave him her side of things and how truly devastating his death was to her (Jason cried when she told him she didn't go to his funeral bc Bruce hadn't told her he'd died which then led to Dixie yelling at Bruce for that particular fuck up again since it was such a big reason why her Little Wing hadn't come home). Jason stayed pretty much glued to Dixie's side and she took full advantage of it to get all the cuddles from her Little Wing.
After such an emotionally charged experience Dixie ended up falling asleep on the couch cuddled up to Jason so he carried her up to her bed so she wouldn't wake up sore. Jason figured it would be impolite to just hop in her bed without permission so be decided to just sit outside her door until she woke up. That was fine until Dixie actually woke up to find herself without her Little Wing and had a full blown panic attack. Jason obviously rushed in as soon as he heard her scream and she tackled him as soon as she saw him. As soon as she was done crying she told him quite sternly that they would be sleeping together from now on and he wasn't allowed to go anywhere without her unless he told her beforehand and had at least one tracking device on him bc she simply couldn't handle losing him again. Jason agreed easily since he didn't wanna leave Dixie anyways.
The Red Hood essentially became Nightwing's bodyguard and most Gotham and Bludhaven criminals learned quickly that hurting Nightwing was essentially the same as signing a death warrent for their kneecaps.
Despite the codependency they weren't in a romantic relationship yet. Jason was fine with this bc he got to live with Dixie and that was already more than he ever thought possible. Dating hadn't even crossed Dixie's mind until one day when she and Jason were at a coffee shop. She had been tired so she went ahead to sit at a table while Jason waited for their order. It hadn't even been 5 minutes before some girl walked up to her Little Wing and started flirting with him. Jason didn't seem interested but he was polite to her and Dixie realized that other women trying to get with Jason was completely and utterly unacceptable.
She marched right up to them and interrupted the girl speaking by draping herself over Jason while sighing dramatically and asking if their order was ready yet. Jason immediately forgot about the other woman and focused all of his attention on Dixie and telling her he was sorry but they hadn't called for him yet so she'd have to wait a bit longer. He actually looked a bit distressed that he couldn't get her drink for her faster so she felt kinda bad but it gave her the chance she needed to glare at the girl so she'd leave.
When they got back to their apartment Dixie plopped into Jason's lap and grabbed his face so she could tell him in no uncertain terms that he was banned from dating other women. Jason was confused since he'd never tried or even mentioned the topic but agreed nonetheless. His easy compliance was actually a bit concerning since Dixie knew it was an unreasonable demand but she figured she could make up for it by becoming his girlfriend herself. At first he didn't believe her bc Jason didn't think she'd ever date someone like him but after realizing she was actually serious he looked at Dixie like she had given him the most precious gift to ever exist.
They mellow out a bit the longer they're together but still stay one of the clingiest couples ever lol (and Dixie also learns about Jason's ultimate desire for her to praise and call him a good boy which she obviously takes full advantage of to spoil him (Dixie is a natural femdom and slips into the mommy role with ease I don't make the rules) and they both learn that the Lazarus Pit not only gave Jason higher stamina but also a shorter refractory period so they definitely take full advantage of that too)
It's fascinating going back to reread the rambling fic drabbles I wrote at 4:00am on no sleep. You can tell what kind of mood I was in and pretty much see the gradual process of me falling asleep lol. I don't always like gender benders but when the mood strikes it strikes hard