Harry Potter x Reader

Third Year - Lupin explains

"One I had grown to have a lot in common with, was (F/N) (L/N), (Y/N)."
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So everyone knows that whichever Harry x reader story you read, I'm there, I'm literally everywhere. And someone said that whereas another person came in and checked my profile where it says I joint a month ago and they were like 'you joined a month ago, how did you get everywhere?' and I'm like..

I'm so fast, sonic is quaking.

Okay, lemme stfu now.
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Third Person POV

It took a few seconds for the absurdity of this statement to sink in. Then Ron voiced what (Y/N) was thinking.

"You're both mental."

"Stop lying!" said (Y/N).

"Ridiculous!" said Hermione faintly.

"Peter Pettigrew's dead!" said Harry. "He killed him twelve years ago!" He pointed at Black, whose face twitched convulsively.

"I meant to," he growled, his yellow teeth bared, "but little Peter got the better of me.. not this time, though!"

And Crookshanks was thrown to the floor as Black lunged at Scabbers; Ron yelled with pain as Black's weight fell on his broken leg.

"Sirius, NO!" Lupin yelled, launching himself forwards and dragging Black away from Ron again, "WAIT! You can't do it just like that -- they need to understand -- we've got to explain --"

"We can explain afterwards!" snarled Black, trying to throw Lupin off. One hand was still clawing the air as it tried to reach Scabbers, who was squealing like a piglet, scratching Ron's face and neck as he tried to escape.

"They've -- got -- a -- right -- to -- know -- everything!" Lupin panted, still trying to restrain Black. "Ron's kept him as a pet! There are parts of it even I don't understand, and have you forgotten (Y/N)! (F/N) wouldn't approve! Harry -- you owe Harry the truth, Sirius!"

Black stopped struggling, though his hollowed eyes were still fixed on Scabbers, who was clamped tightly under Ron's bitten, scratched, and bleeding hands.

"All right, then," Black said, without taking his eyes off the rat. "Tell them whatever you like. But make it quick, Remus. I want to commit the murder I was imprisoned for..."

"You're nutters, both of you," said Ron shakily, looking round at Harry, (Y/N) and Hermione for support. "I've had enough of this. I'm off."

He tried to heave himself up on his good leg, but Lupin raised his wand again, pointing it at Scabbers.

"No!" yelled (Y/N) running forward infront of Ron.

"You're going to hear me out, Ron, (Y/N)," he said quietly. "Just keep a tight hold on Peter while you listen."

"HE'S NOT PETER, HE'S SCABBERS!" Ron yelled, trying to force the rat back into his front pocket, but Scabbers was fighting too hard; Ron swayed and overbalanced, and (Y/N) caught him am pushed him back down to the bed. Then, ignoring Black, Harry turned to Lupin.