Harry also has a meltdown
Predictably, Harry went mental. Sirius tried to casually drop it into conversation with a quick “oh by the way Draco’s coming for dinner” on one of Harry’s weekend visits to see little Teddy and his guardians.
“Draco??” said Harry with a look like he sucked a lemon
“Since when are you on a first name basis with Malfoy? And why on earth would you invite him for dinner? Does this mean he knows where you live? Where MOONY lives? Padfoot tell me you’re kidding”
Sirius blinked, he really should just be grateful that Harry hadn’t immediately run out the front door to interrogate the boy about his intentions.
“Since last month when I started at St Mungos, because he’s a decent chap with little to no friends, yes he knows where we live and he actually quite likes both Moony and Teddy”
This is what seemed to truly set Harry off.
“You let him within 10 feet of Teddy and Remus?! Are you MAD? THAT IS COMPLETELY IRRESPONSIBLE, THE MAN’S A BIGOTED SHIT WHO WOULD SELL YOU OUT IN A SECOND NO MATTER HOW MUCH OF A ‘GOOD CHAP’ HE SEEMS TO BE, THERE'S A REASON THE BASTARD HAS NO FRIENDS”
“Now Harry, that seems harsh, it’s been years since you’ve seen Draco” Moony said with a look at Sirius that screamed ‘I told you so’.
“Oh that was intentional.” Harry spat before taking a deep breath.
“Come on, Prongslet, one evening! I will never breathe his name around you again after this if you still think his blood purist scum afterwards.” Sirius tried to reason, But Harry crossed his arms and looked away, still silent.
Just when the tension in the room was about to boil over and descend into another round of shouting there was a polite knock at the door. Everyone's head whipped towards the sound, luckily, Remus and Sirius had known each other for nearly thirty years and had been getting into trouble for the majority of that time, they shared a quick glance and sprang into action. Remus cast expelliarmus at Harry and Sirius dashed for the door quick enough that Harry was stunned for a couple of seconds before he could react, as soon as he realised what was happening and made to run after his godfather only to find himself at a loss when he heard the cheery chatter from the doorstep and Sirius welcoming someone in in that charming way he only ever did when they had respectable company.
And then, there he was. Draco had done a lot of growing up since Harry last saw him, his hair was still the same pale blond but now reached past his shoulders and was kept in a plait down his back. Harry had never thought too much about how Sirius and Malfoy were related but seeing them standing next to each other it became a lot clearer, they had the same regal cheekbones, long necks, and almond eyes, there was no denying the family relation even if it was somewhat vague. He also hadn't considered the height difference between them, with Darco having 4 or so inches on his godfather which didn’t sit right with Harry for some reason. He hadn’t really thought about it too hard at all, the connection between Sirius and the other purebloods, it occurred to him that he probably knew all the adults that had tried to kill Harry from a young age and probably grew up with at least half of them. He had a sudden ridiculous image of Sirius sitting round a table at a stuffy Christmas dinner with the Malfoys, the Parkinsons, and the rest of the smarmy Slytherins he’d known from school; wearing paper crowns and sullenly reading cracker jokes.
Harry also tried not to think about how much age suited Malfoy, he seemed more sure of himself, more at peace and had grown into his severity. He was also looking right at Harry with an eyebrow raised and he realised that a good few seconds of silence had passed with everyone waiting for him to speak.
Remus took pity on him, thank merlin, and took Malfoy's hand in his own; not really shaking it, just holding it at shaking level with both of his own hands in greeting.
“Draco! It’s good to see you, Sirius tells me you’ve been doing some independent research into the effects of body binding curses on the heart. It sounds completely facinating, would you like a cup of tea?”
Harry was startled at the familiarity and warmth Moony was showing, how could he be so comfortable around someone who almost definitely wanted him dead? Remus was a half blood werewolf in Gryffindor for god's sake! How was he inviting Draco bloody Malfoy in for tea like he was an old friend? More importantly, why was Malfoy smiling and greeting him back? (a bit stiffly, but still).
“Hello again Remus, it’s lovely to see you, how are you keeping? Sirius mentioned you weren’t too well earlier in the week?”
What the fuck. Harry felt like he was having the strangest, most surreal dream of all time as Malfoy and Remus walked to the sofas chatting about the most recent books they’d read. He looked at Sirius who was already watching him.
“What the ever loving fuck” was all Harry could manage to say to his godfather as Sirius smirked at him with a knowing look, Harry was really starting to see the family resemblance now.
“I thought it was a case of not believing it until you see it.” he said as if that explained literally anything.
“He.. he’s having a mothers meeting with Moony” Harry said faintly as if he was about to pass out.
“That he is, really those two get along far too well for my own good, I was already out of my depth with Moony and that giant brain of his, now there’s two of them!” Sirius joked like there wasn’t a death eater discussing the ins and outs of a good novel with his husband on the sofa.
Harry just blinked slowly and tried to understand why no one was screaming, surely someone should be screaming? One of Voldemort’s followers was laughing politely at one of Moony’s jokes and asking after Teddy.
“Sorry to use your weakness’ against you Haz” Padfoot looked mildly concerned at the lack of reaction to his previous comment but continued “you’re not great at thinking on your feet and I thought it was better to chuck you in at the deep end before you had time to mull it over and go all righteous fury on the poor bloke.”
Harry was now absolutely certain this was a bizarre side effect of his new sleeping potion, Sirius looked almost nervous, not of the dark wizard in his living room but of Harry's (completely rational) reaction.
“People can change Harry,” he continued “I grew up in a similar house with similar views to the Malfoys, it’s only because of your dad believing that I /could/ change that I did.” He was giving Harry an imploring look, almost.. Hopeful? It occurred to Harry then that Sirius wasn’t just looking for Harry to take his word about Malfoy but to actually give him a chance to prove himself, and maybe he was asking because a little part of himself still needed to be shown that people aren’t just a product of their environment. This clearly meant more to him than he was letting on.
Harry sighed. He was still totally uncomfortable but if Malfoy wanted to kill them or do something dastardly he probably wouldn't have stopped to add three sugars to his tea and throw what Harry was sure he thought was innocuous side glaces as if he was just waiting for Harry to snap. Was Harry the arsehole here? He couldn't tell, which usually meant yes.
“Fine, one dinner. But if he so much and looks at one of you wrong I’m crucioing him on the spot.” Harry agreed reluctantly.
“And that's precisely why you will not be getting your wand back until he’s left the premises.” Padfoot beamed and Harry thought it was probably worth the grief just to get his godfather to look so happy.