The young couple were sat at breakfast, Y/N whispering in Hermione's ear and kissing her neck as she giggled playfully and told him to stop, all the time hoping he wouldn't.

The pair were getting a glare from Head Boy Percy Weasley, but he was far too intimidated by his godbrother to say anything. His glare was certainly fierce though.

The couple had arrived early as usual, it was barely gone 7:30 when they had finished eating, Hermione her oatmeal and Y/N his large plate of eggs, his bowl of Greek yoghurt with nuts, seeds and berries; and his avocado and banana. Hermione felt full just looking at what her boyfriend demolished.

They sat and chatted happily, other students trickling into the Great Hall, an announcement from Professor McGonagall rang out over the schools loudspeakers:

"All staff and students to the Great Hall immediately! All staff and students to the Great Hall immediately!"

—~—

It had taken fifteen minutes for the last of the stragglers to arrive, many obviously woken up by the announcement.

Harry and Ron were among them, judging by Harry's unkempt hair and Ron's jumper being on backwards.

"What do you think this is about?" Lavender asked from the other side of Hermione as she sat: "Do you think it's about Sirius Black?"

"We're about to find out" Y/N stated pointing to the podium at the front of the hall which Dumbledore was approaching. He stood and looked out at the anxious student body with a grave look of concern:

"I need to speak to you all about a matter of great importance and severity. We have just been notified that earlier this morning, four Dementors were found near the boundary of Hogwarts and Hogsmeade, deceased."

The hall gasped and whispered almost in unison before Albus raised his hands for silence.

"Neither we nor the ministry are aware of who was behind this, or even how it happened. As some of you may be aware it is unknown how to kill a Dementor. As it is unknown if this is related to Sirius Black we have decided to tighten security. For your own safety no student should wander the grounds outside the castle alone, larger groups are preferable. Be also aware that the remaining Dementors are now further aggravated, and they should be avoided at all costs."

—~—

Following Dumbledore's speech the group finished breakfast before leaving early for Defence Against the Dark Arts, with the exception of Ron, who remained in the hall as he was still hungry.

Y/N, Hermione, Lavender and Harry were the first to arrive to class and as they entered Remus shut and locked the door behind them. He looked at his students apprehensively before feigning a smile:

"Forgive me, but I wish for this conversation to be private. Y/N, I must ask, did you have anything to do with the Dementors?"

Hermione had pondered the same, but didn't ask, afraid of what the answer might be. Y/N smiled at his teacher before replying nonchalantly:

"Yeah, Remus. I killed them."

The look of shock on Y/N's friends' and girlfriend's face was mirrored by that of the teacher.

"H..how?" Lupin stammered. He was shocked beyond words. Even after the meeting, where he had learnt of Y/N's true power, he still didn't imagine the boy capable of something like this. Y/N smiled:

"Harry, Lavender, as my most trusted friends I am about to reveal something to you. Something that cannot leave this room."

They both nodded as Y/N continued:

"I have an angel on my shoulder."

Whatever the pair were expecting, it certainly wasn't that. Harry and Lavender both held stunned expressions. Lupin had met Castiel at the meeting but had to feign surprise.

"What are you talking about, Y/N?" Harry asked.

"You two better move back" Y/N chuckled at Harry and Lavender, who were both stood to his left hand side. They backed up several feet before Y/N lifted his arm and unsheathed his Angel blade. The three, the pair of third year's and the Professor, jumped as Hermione buried her head into Y/N's right shoulder, muttering loudly:

"Oh babe, you didn't?"

"Y/N... what is... that?" Lupin asked with a fearful tone. Harry and Lavender were too shocked to formulate a sentence as they stared at the shimmering, sleek, twelve inch blade that was piercing out of their friends upper forearm. Y/N grew his trademarked cocky smirk:

"It's an angel blade. It was a gift from my heh, guardian angel, Castiel. He said it could kill anything, so last night I snuck out of the common room when everyone was asleep and tested it out."

"Baby why?" Hermione asked in a pleading voice.

"You know what they did to me in Azkaban, baby. I've been itching for some payback. Thanks to Cass I got it."

A gust of wind announced the sudden appearance of a trench coat wearing man, causing Remus, Harry, Lavender and Hermione to jump as he spoke in his deep baritone voice:

"That's not what the blade was intended for, Y/N."

Y/N just chuckled, ignoring the reprimand as he replied:

"You gotta teach me how to do that, Cass. I can't apparate in here because of the damn wards in Hogwarts."

Castiel was silent for a moment before he uttered:

"Face me" in a deep commanding tone. Y/N turned and sheathed his blade away to face the angel, who could have been... angry? Upset?

Y/N honestly couldn't tell. To his mind Castiel always wore an expression that signified constipation.

The Angel walked up to him and placed a single hand on Y/N's chest. Y/N felt an immediate severe burning sensation in his chest as he quickly doubled over, breathless and in pain.

"Baby?" Hermione squeaked in panic, rushing to his side.

"Ugggh... What the hell was that?" Y/N asked, the pain still ripping inside his chest.

"Enochian sigils. You are now protected from any wards or enchantments that would block your magical powers. However, it will only work on you, you won't be able to apparate anyone else if there is a ward in place." Castiel said emotionlessly.

"What? What'd you just brand me with it?" Y/N asked in shock.

"No. I carved it into your ribs. Don't try anything stupid like last night again"

Castiel replied calmly and with another gust of wind he was gone. Y/N rubbed his chest again before looking at Hermione, smirking, and with a small pop he was over the other side of the classroom.

"Ohhh hell yeah! Thanks Cass!" Y/N exclaimed with an excited chuckle.

Harry and Lavender were shocked beyond belief from what they had just heard and seen. Hermione was quiet as she hugged Y/N. Lupin looked shaky but spoke up:

"I suggest we keep all that just happened and was discussed to ourselves. We should talk after class, Y/N. For now please take your seats, I need to let the rest of the class in."

He unlocked the door as Hermione took a seat next to Y/N and Lavender next to Harry. As the rest of the students entered and sat Lupin announced that today's class had changed, given recent events and would therefore, unsurprisingly, be about Dementors. Hermione huddled closer to Y/N as Remus began but quickly answered a question from a Racenclaw named Terry Boot:

"Have you any experience with Dementors, Professor?"

"Very limited I'm afraid, I've only encountered them once, on the train here, and that was terrifying enough."

"Well shouldn't we ask someone here with substantially more experience?" Boot countered.

Hermione squeezed Y/N's arm tightly and Lavender rounded on the boy.

"What the hell is wrong with you? Y/N went through hell in Azkaban. He's not some resource to be exploited for information!"

Lavender's voice raised and her eyes narrowed. Ron, who was sat next to Neville, gulped. An angry Lavender was almost as frightening as an angry Y/N. Almost, anyway. She was stunned at Y/N spoke:

"No, it's fine Lav. Do you have an issue with it Professor?"

"No, if you're sure Y/N" Remus replied.

Y/N kissed Hermione on the cheek and reassured her it was ok. He got up and walked to the front of the class, sitting on the teachers desk and looking out at his classmates:

"Ok so where to start. I suppose the reason I was sent to Azkaban. I got myself sent there on purpose. When my uncle broke out of the rock and was seen near both my ancestral manor house, and my family's traditional summer home, I was concerned he was looking for me, to finish what the Death Eaters started when I was a child. So I decided to keep Hermione safe by making myself an easy target. I knew that oaf of a Minister wanted me locked away, so I gave him reason to do it."

Y/N looked around the class. All eyes were on him, even the Slytherins.

"How could you know he wanted to send you there?" Michael Corner, another Ravenclaw asked.

"He tried last year when I put those two shit heads and Flint in their place" Y/N pointed at Crabb and Goyle who instantly looked down, afraid.

"As a noble I chose to be whipped so I could stay at Hogwarts and protect Hermione, even though I failed."

Y/N looked down. Hermione was about to rush over and reassure him before he quickly started speaking again.

"So there are human guards and Dementors in Azkaban. The human guards deal with the day to day running of the prison, the Dementors feast on the prisoners and merely enforce rules. The only one that matters is no one leaves. Otherwise the prisoners can do whatever to each other. The guards are as sadistic as the criminals."

Y/N looked downwards, memories flashing before his eyes. Hermione started to say "ba-" But was cut off as he continued:

"Dementor psychic attacks start as soon as you arrive. Fresh prisoners with a head full of happy memories are like a juicy mutton chop to the Dementors. I felt their attack as soon as I got there."

The class was quiet before Parvati Patel asked:

"So they sucked your happy memories out of your head?"

Y/N looked up coldly for a moment before his gaze softened and he chuckled:

"No. They tried, but my Occlumency shields were too strong. I'd already prepared several shielding layers and a false memory complex, in case they were able to penetrate my shields."

Y/N looked at a class full of blank faces. The only exceptions were Lupin and Hermione. Y/N sighed. He always had to dumb things down for these sheep.

"I put a big wall around my memories, kept them safe."

"So the dementors couldn't get in?" Lavender asked.

"No, but they tried" Y/N

"How was that?" Ron asked.

"Like eating strawberries and ice cream Ron. How do you think?" Y/N snapped

"Imagine a sharp pin. Now imagine it poking you inside your brain. Now imagine it doing it again and again. Before you can recover from the pain of the first pin-strike there's another and another. Now imagine there's 100 pins, and that it doesn't stop- at all. While you sleep, while you eat, while you shit, it's there constantly attacking you. That's the willpower it takes to keep Dementors out."

Y/N had grown more animated the more he spoke. More angry. More wanting payback for what they had done to him. Hermione noticed the edge of her boyfriends eyes seemingly blackening before he was shaken out of it by Pansy Parkinson:

"So you did it, you kept them out?"

The Slytherin heiress asked Y/N with a surprising look of admiration.

"I did, but they weren't happy about it. They locked me in a hallway with ten hardcore Azkaban gang bangers as punishment for not feeding them."

"What happened? Pansy asked.

"You heard the boggart?" Y/N answered coldly. The class was silent as the realisation that Y/N had killed them all settled over the room. Y/N was met with a mixture of looks of fear, sadness, intimidation and admiration. Y/N sighed and continued:

"Once I'd robbed them of their food source they threw me in The Hole. For those of you who don't know it's a sensory deprivation torture chamber. The longer you're in there the worse the torture gets. The more brutal... the more painful... It's only supposed to be used for twenty four hours..."

Y/N's voice trailed off as the horrors he was subjected to flashed in front of his eyes.

"How long were you in there?" Susan Bones asked, looking terrified. Her Aunty had told her what had happened, under the promise of not sharing the information, that Y/N had pleaded with Amelia to send him to the rock. All in an effort to keep Hermione safe from Sirius Black. It had sat with Susan as she stared at Y/N with admiration. She imagined what it was like having someone one love you like that.

"The first time three days. The second time nine" Y/N answered coldly.

The room fell into silence as the class processed the information. It was one thing to read about something in the paper, it was something else entirely to have a student their age, sat here, describing how he was tortured by the government. Even most of the Slytherins felt sickened by it.

Finally Terry Boot spoke up, asking:

"So how does one stop a Dementor?"

Remus looked at Y/N, who was sat seemingly miles away, Hermione staring at her boyfriend with concern. The Professor quickly moved to pull the classes attention to him.

"With a Patronus charm. Not something we can teach here, not something that is even in the N.E.W.T curriculum. It's too challenging and not many wizards and witches can actually cast one."

"Can you sir?" Yuffie asked, looking dreamily at Lupin as she did.

"I can, but perhaps you would like to give a demonstration, Y/N?"

The class looked at Y/N confused. He was still staring off into empty space as Lupin called out to him three times before getting his attention, Y/N simply responding:

"Hmm?"

Lupin offered a concerned smile and replied:

"Would you care to demonstrate your Patronus?"

Without a word Y/N unsheathed his wand and pointed it in the air:

Expecto Patronum

A silver light flew out of his wand and took the shape of a dragon. It flew around the room before disappearing. Remus continued:

"Now most patroni are of a regular animal, for those who can cast it, an animal that reflects something deep inside you. My patronus is a wolf, I'd like to think because of how they care for members of their pack. But a magical patronus like Y/N's... well that is exceedingly rare. Only tremendously powerful witches and wizards have a Patronus like that. In fact the only person I know who has one, other than Y/N, is the headmaster, who has a Phoenix."

The class were once again shocked by their extraordinary classmate. Lupin asked for a round of applause for Y/N which most students gave very enthusiastically. Hermione saw some of the looks Y/N was receiving from a number of the females in the class and latched onto him as soon as he sat down, planting a kiss on his lips before smiling at him and whispering: "Mine." It was quickly followed up with:

"Are you ok?"

Y/N nodded, wrapping an arm around his girlfriend as she nestled into him, Lupin continued his lesson, changing to the original topic for the double, Red Caps.