Part I is here
The first problem in the Grand Plan of Learning to Become Animagi isn’t the plan itself. That part is pretty straight-forward, even if entails more reading about higher-level Transfiguration magic than he would like to be doing over a summer…or ever, really. He’s a good student, but there is a time and a place and that time is not in July.
Everyone else disagrees. Sirius Black’s friends are wankers. His brother is a wanker who won’t let him sleep in, as they have to comb the family library for useful books before anyone else in the house stumbles out of their bedrooms for the day. Regulus nearly loses his fingers to a biting book with metal fucking teeth before Sirius obliterates the book with his wand.
He didn’t mean to obliterate the book so much as he didn’t want it to eat his baby brother. Regulus wraps his fingers in bandages before they hurriedly hide the evidence of the unlamented death of 1,0001 Ways To Transfigure the Dead.
“Why?” Sirius asks when he sees the cover.
“I thought it might have something useful,” Regulus protests. “We’re trying to figure out how to turn one of us who is cursed into an Animagi, and they don’t exactly talk about Animagi Werewolves in the standard books.”
Sirius looks at the family library. He doesn’t think anything in this room has ever been a standard anything.
No, the difficult part is getting them all together in the same place. They could probably sneak Severus past their parents, Aunt Cassiopeia, and Uncle Pollux. Severus would just need to use his mother’s name, a Pure-Blood ringer, instead of his father’s. Remus’s father is a famous wizard for dealing with Dark creatures, but Lyall Lupin is Irish, so that’s…probably not worth chancing.
Lily Evans doesn’t have a chance in hell of getting into 12 Grimmauld Place. There are curses built into the windows and doorways specifically to execute any Muggle-born who tries to enter. All Sirius knows about how those terrifying things work is that they’re tied to Pollux.
Maybe the stupid things will die when Pollux does. That’s a nice thought.
The other problem is that their parents are suspicious of anything Sirius does, even after he Sorted Slytherin, and don’t want him to leave the fucking house. Sirius sulks in his room for hours at a time over that one, chewing on the edge of his thumb. Short of running away, he can’t get out of this house short of brilliance.
Running away isn’t an option; Regulus would be on his own against the four terrifying twats they’re related to—or worse, Regulus would come with Sirius, and then the Black Family would get the Wizengamot involved. The Wizengamot would send out every Auror who has ever Aurored (including the dead ones) until precious Regulus was found and properly returned to his loving family. Sirius would be thrown in Azkaban at age fourteen for kidnapping.
Regulus solves their difficulties, because Regulus Black is a conniving little shit who probably needed to be put in Ravenclaw to stave off some of the connivingness. Either way, it gets them out of the house, so Sirius will take it. Even while he tries not to gape at his brother’s sheer fucking audacity.
“Mother, I wish to visit a Pure-blood friend of mine who lives northwest of London,” Regulus says in that perfectly snooty way of speaking that their parents insist upon. Regulus doesn’t do it at school anymore, or in private, or Sirius would have punched him in the face. (Again.)
Mother looks up from the tarot cards she is busy laying out. Sirius glances at the layout and knows that his mother has absolutely zero talent for Divination, else there would be some hint that her sons were up to mischief. Instead, he’s pretty sure those cards are talking about her waistline relating to the weather. “You’ve only completed your first year of Hogwarts, darling. You’re a bit young to be traveling on your own, even if using the safety of the Floo.”
“I’m aware, but I’ve had some thoughts on the matter. You see, my friend is of the Prince line.”
Mother raises an eyebrow. “I see. I wasn’t aware there was anyone from that illustrious line remaining.”
“Just the one, I’m afraid,” Regulus says with the perfect amount of deference. “His mother was disowned by her parents when she made a foolish childhood blunder and mixed her blood with someone unworthy. However, she is raising him to all of the proper Pureblood traditions. He is the smartest Slytherin in our year, and quite effective with a wand.”
Sirius almost breaks face and glares at Regulus for that. The hell he is. Severus and Sirius are tied for that honor, thank you!
“That would be Eileen, then.” Mother hums under her breath. “I did think Eileen quite sensible in school, if a bit dull. Is her son dull?”
“Quite the opposite, Mother,” Regulus assures her, smiling. “But my thought, given your concerns…do you not think that Sirius might also benefit from socializing with another properly raised Pure-blood? One of Sirius’s own age, and one who is being raised to the correct standards one should attain in life?”
Mother looks sharply at Sirius. Sirius widens his eyes a bit and lifts his shoulders to say that he knows nothing about Regulus’s idea. He is very, very good at lying to his parents. It means he’s still alive. “Do know of whom Regulus speaks, Sirius?”
“I do, Mother. He isn’t…” Sirius nearly bites his lip. No, that won’t do at all. That will set off her shrieking about deportment. “Severus Prince and I did not get along at first due to my friendship with James Potter. Then…we didn’t want to concern you.”
Mother puts down her deck of cards. “Concern me about what?”
“James Potter and his friend Peter Pettigrew attacked Regulus. I believe they forgot in their idiocy that Regulus is my brother, and thus not to be touched. Severus helped me to stop them, and to take immediate revenge.” There. Lily helped, too, but he doesn’t dare mention Lily. Then he’d have to wrack his own brains for a Pure-blood name that might conceivably have a red-headed witch Sirius’s age, which is a doomed task. His mother knows all of the witches who are Sirius’s age, since she wants to marry him off to one the day he turns seventeen.
“You retaliated against a Potter and a Pettigrew.” Mother looks pleased. “Blood-traitors, the both of them. It is good to know that you are seeing sense at last, Sirius.”
Sirius tries not to gag audibly.
“If you promise that no harm will come to Regulus, I will give the two of you leave to visit the Prince household whenever you like during this summer…unless we have other plans, of course.”
Now he isn’t gagging. He’s trying not to choke on disbelief. No screaming? No wailing? No guilt? “I promise Regulus that I won’t let anything or anyone harm him,” Sirius says.
Mother looks pleased at his wording instead of offended. Sirius wonders if he woke up in the wrong reality. “Very good. Run along. If you choose to visit the Prince household today, return in time to properly wash for supper.”
“Yes, Mother,” Regulus and Sirius chorus together. Then Regulus says, “I don’t know if it will be today, Mother. I need to write to Severus and ask for proper permission. One does not simply invite themselves into another wizard’s house without due cause.”
Mother nods and waves them off, picking up her cards again. Sirius wonders if she knows that the cards are now claiming that their house will be carried off in a sudden flood.
“I can’t believe that worked,” Sirius says to Regulus the moment they are upstairs, safe in Sirius’s bedroom. It’s the one they keep free of listening spells, as Sirius is the Misbehaving Rebel. If Regulus started doing the same too soon, the family would be suspicious.
“Of course it worked. While you were busy screaming at Mother, I was busy learning how to flatter her.” Regulus grabs Sirius’s copy of the enspelled paper, a quill, and an old slate to use as a table. “I’m asking Severus if their family is hooked up to the Floo Network.”
“I really doubt it,” Sirius says, remembering what little they’ve been told about Tobias Snape. Sirius has nothing against Muggles, but Severus’s father sounds like he would get on just fine with Pollux. “We’ll have to take the train to Cokeworth. Lily and Severus mentioned that it takes a bit over an hour as long as we’re not traveling during peak times. Whatever peak times are.”
“Morning and evening commute,” Regulus mutters, still busy writing. “No, they’re not on the Floo Network. Severus is trying to convince his mother that it’s necessary and they don’t have to tell his dad a thing about it, but she keeps refusing. Oh, Remus arrived at Lily’s house last night. Severus says Lily’s parents are trying to adopt a werewolf who already has parents, and that Lily’s sister despises Remus already because the werewolf has been granted the guest bedroom. Claims it’s bad enough that ‘the Snape boy’ is allowed to sully the house. Petunia Evans sounds like she’s going to be fun.”
Sirius grimaces. “Tobias Snape as a match for Pollux on one side, and Cassiopeia has her match in Lily’s older sister on the other. Yes, that sounds wonderful. We should shove them both out in front of an oncoming train.”
Regulus glances up at him. “Sometimes you sound way too much like our father.”
Sirius stares back in horror. “Please never say that to me again.”
“Only if you deserve it,” Regulus replies happily. “Oh, Severus says if we go to King’s Cross Station now, we’ll arrive in time for lunch.”
“What do we tell Mother?” Sirius asks.
It can’t be that difficult to buy Muggle train tickets. He has a bit of Muggle money set aside thanks to his Uncle Alphard, who is possibly one of the only decent adult relatives they have.
“We’ll take the Floo to King’s Cross, is what,” Regulus says, rolling up the scroll before getting up to hide it in Sirius’s charmed desk drawer. They’re the only two who can open that drawer. It won’t open for anything else unless the entire desk is destroyed by Fiendfyre.
He is that paranoid for a reason, thanks.
“And the elves?” Sirius asks, knowing how much Kreacher worships their mother.
“The elves like me. If I tell them that we’re off to see a Pure-blood with Mother’s permission, they won’t say a thing to her about the first place we went. She would have to know to ask specifically.” Regulus grins at Sirius. “Why did the Hat put you in Slytherin? You’re bad at planning!”
Sirius throws his hands up into the air in frustration. “I don’t know! I asked it not to!”
Buying a Muggle train ticket really is that bloody complicated. If Regulus hadn’t brought his charmed scroll so he could ask Lily how to buy tickets, they would be wandering around King’s Cross until the Hogwarts Express arrives in September.
At least Sirius did have enough money—more than enough. Alphard should really explain a bit more about Muggle currency. Sirius thinks he might have enough in Muggle folded notes that he could convert them at Gringotts and rent a nice flat in Diagon Alley for a month.
It occurs to him about halfway out to Cokeworth that maybe Alphard is giving him untraceable Muggle money for exactly that sort of reason. Sirius isn’t certain if that makes him happy, or if it’s terrifying that his uncle feels the need to leave Sirius with these sorts of…of contingencies.
Do Aurors know how to search by Muggle means to find missing wizarding kids? Or do they just rely on the Trace? Regulus and Sirius’s wands don’t even have the stupid Trace. That’s only placed on Muggle-born wands. What would Aurors do without that big shining magical hint?
When the train pulls up to the station in Cokeworth, Sirius realizes something that makes his stomach turn over. He has yet to see his first Muggle town or his first Muggle household, and he’s already beginning to make plans to get himself and Regulus the fuck out of 12 Grimmauld Place.