A/N: Glad to hear so many people are enjoying the story and interested in reading more! Here's the next part.

Dear Harry,

I can't believe I'm really reading this. Maybe I've finally gone loopy in here or maybe you're just as brilliant as your dad and I always were and have found a way to get post owls to deliver to Azkaban.

And you're only six! Six already. I can't believe it. Time flies. It seems like only yesterday you were a chubby little baby chewing on my finger.

I more than knew your parents, Harry. They were my best friends. My family really. Your dad was like a brother to me - we finished each other's sentences, always knew what each other was thinking, people used to say you never saw one of us without the other. Your grandparents took more care of me than my own parents ever did. I'm an honorary Potter, you know.

You won't remember it but I know you too, Harry. I've known you since you were fifteen minutes old – first person to see you, other than your dad of course. You were sick all down my favourite jacket and I thought you were fantastic. Loved you on the spot. I am SO glad to hear from you.

First things first: are you okay?! The aunt and uncle you mentioned must be Lily's muggle sister and that whale of a muggle bloke she married. You haven't got any other aunts or uncles. Unless you count me or Uncle Moony but he'd only call James a drunk to wind him up. The question is, how did you end up living with them, of all people? Surely there was someone better they could have sent you with? They can't have been short on offers - everyone loved the buttons off you. One of my only comforts is imagining you growing up with a nice wizarding family. I thought the Longbottoms. Lily and Alice got on like a house on fire, she was always over with little Nev.

Are your aunt and uncle looking after you all right or does someone need to go and have a word? Not a good sign that you've never heard of me and don't know a thing about your parents. That's an outrage. Your mum and dad were the best people I ever knew and your aunt should count herself lucky to get to tell you about them. I could kill whoever let you end up there. We heard Lily's sister was awful but I'm surprised she's that bad. What have they told you about the wizarding world?

It shouldn't have been this way, Harry. I expect you don't know – I'm your godfather. Your parents wanted me to look after you if anything happened to them. If I didn't get myself stuck in here you'd have been with me this whole time - buying me World's Best Godfather mugs every Father's Day, I'm sure.

I'm furious I can't tell you this in person. It's hard to explain but I've been a bit out of it over here for a long time. It wasn't until I got your letter I was even able to think about all this. I'm thinking more clearly now than I have in years. I know that makes no sense, hopefully I can explain it better someday.

Given the circumstances it might be a good thing no one's told you about me. If you believed some of the things people say about me these days you wouldn't want to write to me at all. But Harry, I promise you: none of it is true. I can explain everything. The most important thing to remember is I would never under any circumstance betray your parents. I'd have given my life for them. I'd cut my own tongue out before betraying them. Sorry. Probably a bit graphic for a six year old.

You're the first person to contact me here. I didn't even know it was POSSIBLE to contact me here. If you've not heard anything about your parents then I can't imagine you're in touch with anyone magical because everyone loved them and raved about them, even when they were alive. But if you have ways to contact someone else in the wizarding world like you reached me, see if you can get a message to Albus Dumbledore. Or Remus Lupin. If you can, let me know and I'll send you a letter to forward to them. There is very important information concerning a traitorous rat named Wormtail that proves my innocence. We need to avenge your parent's lives, Harry.

If we can get them to see reason I might have a chance at getting out of here. Of course soon as I'm a free man I can bust you out of your aunt and uncles' and you can live with me if you want? Like you should have all along.

In the meanwhile, I've got nothing but time and plenty of stories. It'll do me good to force myself to remember them actually. What do you want to know about your parents? Ask me anything, I'll tell you everything I know.

Lots of Love, and five years of missed hugs and kisses from,

Your godfather,

Sirius Black

P.S. Sorry about my writing materials – not much selection here.

The same owl that had swooped his letter away now hopped from foot to foot, waiting patiently while Harry read.

Harry's hands trembled as he read on. He had family. Living family. Real family, who loved Harry and wanted him and cared about him, like Dudley the other children at school. A godfather who asked if Harry would like to live with him! Harry's dreams were coming true!

There was a lot of other information in the letter that was very confusing but Harry's eyes jumped like magnets to those important parts. He was almost deliriously happy.

Harry quickly read the letter again just to make sure he hadn't misread it and hugged it to his chest when he finished. He felt like he could almost feel those hugs at the end through the paper. For a boy with no memory of receiving hugs, it was the most tangible affection he'd ever had.

The owl nibbled on a begonia and Harry had to give it the ham from his sandwich to distract it so it wouldn't ruin his Aunt's flowers. He wasn't sure how long the owl would wait for his reply to Sirius Black and he didn't want to risk it flying away and leaving him with no way to write back. Who knew what the chances were of another owl who liked to deliver unaddressed letters turning up unannounced.

"Can you…wait there please…while I write my reply?" Harry asked the owl, pushing the whole sandwich towards it. The owl looked at the bread distastefully but hooted in a way that sounded like a yes.

Harry excitedly ran into the kitchen to get a pen and paper and sat at the kitchen table to compose his response. He was grateful the Dursleys had taken some of Dudley's friends to a water park today and missed the arrival of the owl with Sirius' letter.

Harry didn't have time to dwell on his surprise that owls apparently took it upon themselves to deliver unaddressed letters to strangers if you left them lying around. He barely spared a thought that Sirius' letter was written on the back of his own and the writing was cramped and frenetic, scratched out in a mixture of muddy brown and what looked scarily like dried blood. He would make sure to put a pen and a spare piece of paper in with this next letter. He also made sure to write "Azkaban" beneath "Sirius Black" on the front of the envelope, now that he knew that much. Just in case the owl forgot. It was an owl, after all.

Harry was dizzy with excitement. His legs vibrated against the chair. His hand shook as he wiped off the dirt from the garden and put pen to paper. His whole body tingled with hope and awe and excitement. Someone loved him. Lots, according to the letter. And not just someone - his parents' best friend.

Best friends were even more important than family, in Harry's opinion. Aunt Petunia was his mum's sister but that didn't mean she cared about Harry or his mum very much. His dad had chosen Sirius to be his best friend and Sirius cared.

Harry had always wished for an unknown relative to turn up and claim him. Now here one was asking if Harry was okay and saying he thought Harry was fantastic, even when Harry was sick on his jacket. Harry remembered Uncle Vernon shouting once when Dudley was sick and some got on his shoe. He smiled smugly.

Harry was also gratified to read that his dad wasn't a drunk. Sirius hadn't outright said he wasn't but it really sounded like he wasn't from his answer. It sounded like Harry's parents were very nice and people liked them very much - and not just their best friend, Sirius had mentioned multiple people! Harry wanted to tell Uncle Vernon how wrong he was but that would involve letting him know about the letter, which would not be a good idea. It was good enough for Harry just to know for himself.

Around that part of the letter were a lot of the confusing parts - names and words Harry didn't know, things it seemed like he was supposed to understand but didn't. Sirius had said a lot of other people had loved Harry too. Harry's head spun. What happened? He wondered. Did they change their minds?

Even if they had, he still had at least one person. Sirius Black. His godfather. Harry said his name out loud over and over to himself. "My godfather." "Sirius Black." It still didn't seem real.

It was like a dream. Harry wasn't entirely sure he hadn't fallen asleep on the bench at school and dreamed the owl and the whole exchange. He pinched his arm and it hurt, which he supposed was a good sign.

Harry had family of his own and his godfather was sad he couldn't be with Harry and cared about how he was and had known and loved his parents. He told Harry he'd come get him one day. Lots of love, and five years worth of missed hugs and kisses, he'd written. Loved you on the spot.

He was loved. Harry's heart felt lodged in his throat. The words buzzed around his brain. Harry had always assumed his parents loved him before they died but that was just a guess, a hope. This was the first time Harry had ever experienced the word love directed at him. It was written down. Twice in one letter. He had everlasting proof that someone loved him and it couldn't be taken back.

Harry's mind filled with happy images of himself and a faceless godfather away from the Dursleys. It was like those daydreams he'd have where his parents were alive after all or the long lost relative would turn up at Privet Drive to collect him, apologising they took so long to find him. But this time, it was real.

It was the next best thing to having his parents back. For the first time since he could remember, Harry had someone who cared about him. He had a godfather.

A/N: Hang in there, it's not ALL gonna be QUITE this fluffy.

Although. To be honest. Most of it is gonna be very fluffy. :)