DP x DC
So we've all seen aus where Danny gets adopted by the Batfam because, let's be honest, he's a textbook case of a Bruce Wayne adoptee. But what if we took that, just slightly to the left? Instead of Batman adopting Danny, the Batkids do. Now, the reason why Danny is in Gotham can be whatever you want(I'm partial to reveal gone wrong or an accident happens so he leaves as to not become Dan) but one by one and completely coincidentally(or so they think, maybe Gotham helps push them together) Danny befriends each of the Batkids.
He meets Tim at a coffee shop(maybe he works there) and they bond over the insane amount of caffeine they like in their coffee.
He meets Daimian at some vegan place that Sam would just love if she were there and tho Damian refuses to say it there's something he finds endearing about this street kid who seems to have no clue who Damian is but smiles at him regardless and engages in some surprisingly pleasant conversation about places that serve vegan food or vegan options.
He and Duke have a class together in school and he meets Barbara while studying at the library. Or maybe Duke invites Danny to join a study group and that's how he meets Babs and maybe Cass and Steph too.
Maybe he meets Dick as Nightwing and they bond over their love of puns.
Jason can be met as either a civilian or as Red Hood, but the second they get within a certain range of each other, they get this feeling tugging them towards each other. Some 'I don't know why but I need to go this way' type feels. Jason calls it instincts, Danny can tell this feeling is coming directly from his core. They literally run into each other and immediately get this overwhelming feeling of 'same same like me'.
He ends up growing close with them all individually so when they eventually realize that 'hey, this new friend we've all been talking about is the same dude', well of course they have to keep him. So they all work together to sneak him into the manor(read: kidnap) and get him set up in one of the many unused rooms. And the fact the Bruce was off on a business trip when they did it made it wonders easier, they would definitively have got caught if he was around.
So now Danny is a stow away in this mansion that all his new friends apparently live in and he just kinda goes along with it cuz 'hey, they're nice and he gets somewhere to sleep rent free and the food is to die(again) for'. And yeah, they're the kids of the best detective in the world, they're gonna be good at hiding their tracks(they have to be or they would never get away with anything) but Alfred knows everything that goes on in the manor. He takes one look at this child and just accepts it. He allows the children to believe they are deceiving him but helps them out subtly by accidentally making extra food at meal times.
And if sometimes they want to hang out with Danny in the house they do his clothes and hair like whichever kid he resembles the most and so long as he doesn't talk nobody can tell the difference.
And maybe when Bruce comes back from his trip he figures it out immediately but he doesn't say anything because like hell he's gonna turn away a child in need. Instead he just silently fills out the adoption papers so he's ready when the kids eventually decide to reveal Danny's presence to him.
I also am fond of the take where Jason or Dick finds this mouthy teen squatting somewhere that is definitely Bruce adoption bait only to take him in themself and have that moment pure horror at the realization "Oh god I'm just like my father."
