Y/N woke early and headed out of bed, ready for his workout. He was glad to see the common room empty when he got in there. Time turning had been tough on both he and Hermione, he worried his poor girlfriend needed to catch up on her sleep.

Just as he was walking out the common room portrait door he heard a feminine throat clear behind him. A sweet heavenly angelic voice called out:

"Where do you think you are going?"

Y/N turned to see his bushy haired beauty looking at him with narrowed eyes. He chuckled and answered with a raised eyebrow:

"Just going for my workout babe."

He was puzzled why Hermione was quizzing him.

"Uh uh not today you're not. Sit."

Hermione pointed at the couch near the fireplace, the one they always shared. Y/N, knowing better than to cross an angry Hermione, sat as she had requested, looking slightly nervous.

Hermione smiled as she straddled Y/N's lap and quickly pulled him into a passionate kiss. She licked his lips which parted instantly and she immediately pushed her tongue into his mouth, exploring it as she moaned. She pulled away quickly to smile at her puzzled, but glassy eyed, boyfriend. She smiled widely:

"Happy birthday love!"

A look of realisation crossed Y/N's face as he realised that once again he had forgotten his own birthday.

Hermione shyly gave Y/N a beautifully wrapped present. He smiled and thanked her as he opened it.

It was a pair of matching beautifully embossed notebooks. One with Y/N in a gilded loveheart on the front and the other with the same but saying Hermione.

"I know it's not much, but they're enchanted. Look"

Hermione wrote 'I love you' in the notebook with her name. Suddenly, Y/N's notebook gilded loveheart glowed. He opened it to see Hermione's writing appear on the page.

"We can stay in contact this way, when you are off training. We can still talk to each other. I know it isn't much but-"

She was cut off by a passionate kiss from Y/N. It was hot and steamy before Y/N pulled away:

"Baby it's incredible! I wanted so bad to speak to you when I was with Jacob and Grandad over the summer, these are amazing. Where did you get them?"

Hermione blushed at the praise, thankful Y/N was so happy with the present.

"I designed and ordered them at a muggle stationary shop near home, then enchanted them myself."

Y/N's jaw dropped as he chuckled:

"You really are brilliant, babe."

—~—

The two sat on the couch for the next hour, Y/N skipping his workout this one morning to spend time with Hermione.

Just after six they headed to the Great Hall for breakfast, but Y/N had to make use of the facilities on the way.

Hermione waited in the corridor while Y/N did what was necessary. He finished and walked to the bathroom sink to wash his hands.

He rinsed and turned the tap off and just as he reached for a paper towel he was aware of a buzzing noise in his ear.

It started low but escalated quickly, getting louder and higher in frequency. Y/N's lip curled in discomfort as he grabbed his ears and bent over in pain. He yelled at the agonising noise before throwing himself to the floor, just as all the mirrors in the bathroom imploded above his head.

Just like that it was gone. In an instant Y/N exhaled in relief as a small trickle of blood dropped from his ear.

Hermione rushed in to see her boyfriend covered in broken glass. He yelled at her to stay put before casting Reparo, the glass flying up and being fixed as Y/N gingerly got up.

"You ok?" Y/N asked in a panic as he checked Hermione over. Hermione nodded before looking at Y/N in confusion as he asked:

"That noise didn't hurt you, did it?"

"What noise babe? I rushed in when I heard the mirrors smashing. What happened?" Hermione asked concerned.

"I don't know, love. There was this noise, this high pitched squeal, broke all the mirrors and disappeared."

Hermione grabbed some paper towel and cleaned Y/N's ear with concern. The couple were both puzzled, but walked to the Great Hall after Y/N reassured Hermione he would ask Sam about it in Ghoul Studies.

—~—

The couple had a nice breakfast before going for an early morning walk around the Black Lake, fortunately not running into any Dementors. They talked, they laughed, they smiled and kissed as they walked, hand in hand, completely and utterly in love.

At 9:30am they headed back towards the castle for Ghoul Studies, and as they entered Hermione pulled on Y/N's hand, pulling him to a stop.

"Can I come to class too this week, love?" Hermione asked with a shy smile.

"I want to stay with you, it's your birthday."

Y/N awe'd at the sweetness of his girlfriend.

"Sure babe, Sam's a pretty chill guy. He shouldn't mind" Y/N replied with a smile.

The couple walked hand in hand to the classroom and Y/N knocked, hearing Sam call out:

"Come in, Y/N"

Sam looked up surprised to see Hermione enter the class as well.

"Hermione, this is Sam Winchester. He's a Hunter who was trained by my dad as you know. Sam this is my beautiful girlfriend, Hermione Granger."

They greeted each other politely before Y/N spoke again:

"Hermione was hoping to join us today if possible, Sam. Just because-"

"It's your birthday. No worries."

Y/N looked surprised and Sam spoke again.

"I was talking to Dumbledore about you and he mentioned it was your birthday today."

"Talking about Monday?" Y/N asked as they all sat.

"Yeah. Look kid I had no idea that was going to happen. But to do what you did. I mean a whole nest, alone? There's not a Hunter I know who could do that. Let alone take down 24 blood suckers"

Y/N chuckled but Hermione spoke quickly and fiercely:

"24? You didn't say it was that many?"

Hermione's tone was full of concern. Y/N smiled sadly:

"I honestly didn't know, babe. I wasn't keeping count."

Hermione sighed and nodded, giving Y/N a look of resignation.

"Well there's nothing more I can teach you about Vampires. Well done Y/N. Well done. So that's two modules down and two grades of Outstanding. Who said NEWTs were hard huh?" Sam chuckled.

Hermione's expression had quickly turned to a proud smile and Sam smiled in turn, seeing the couple's interaction, before a sad expression crossed his face. He thought about her again. He decided to quickly move on.

"So now we are gonna go onto our next module today and for that I need you to meet someone special. Someone who has been looking over you. Castiel."

Y/N raised his eyebrow before jumping as a figure appeared in his peripheral vision.

"Merlin, man. Stay out of my arse" Y/N snapped as he stood. The dark haired, trench coat wearing man looked at Y/N puzzled:

"I was never in your..."

Y/N and the man stared at each other in mutual confusion as Hermione had covered her mouth with her hand, trying her hardest to hold in a laugh. Sam rubbed his eyes with his thumb and forefinger. Castiel was powerful, he was an angel after all. But the guy had no people skills and was stiff as a board. He also took everything literally. This was to be an interesting conversation. Y/N spoke up:

"Who are you?"

"Castiel" the man replied calmly.

"Yeah, I figured that much. I mean what are you? People can't just apparate into Hogwarts."

The man offered a slight smile before answering nonchalantly:

"I am an Angel of the Lord"

Hermione's mouth and eyes widened in complete shock. Y/N stood there with no emotion on his face before his eyes slowly narrowed.

"Get the hell out of here. There's no such thing."

Castiel looked at Y/N.

"This is your problem, Y/N. You have no faith."

The room suddenly cracked with lightning and the lights flashed as a pair of wings became visible momentarily behind Castiel before disappearing. Castiel smiled:

"I am sorry for this morning in the bathroom".

"Wait that was you?" Y/N asked in realisation.

"My true form, yes. It can be overwhelming to humans. As can my real voice which you now know."

"That was you talking? Buddy next time turn down the volume."

"That was my mistake. Certain people, special people, can perceive my true visage. I assumed you would be one of them. I was wrong."

"And what visage are you in now, huh? Holy tax accountant?" Y/N asked snarkily.

Hermione noticed Y/N getting agitated, she looked at Sam who picked up on it as well and looked slightly anxious. The underlying tone was missed by the angel as he looked down at his body and chuckled:

"This? This is... a vessel"

"You're possessing some poor bastard? Like what, Angel imperio?" Y/N snapped.

"He's a devout man. He actually prayed for this."

"Look pal I'm not buying what your selling. So who are you really?"

Castiel looked slightly confused as he answered:

"I told you?"

"Right. And why would an angel watch over me? Huh?"

"Good things do happen Y/N" Castiel said stepping closer to Y/N. Y/N hardened his glare and responded coldly:

"Not in my experience".

Castiel looked puzzled again. He looked at Y/N and asked "what's wrong?"

Before Y/N could answer a look of realisation came over Castiel's face. "You don't think you deserve to be saved?"

"Oh you're here to save me, huh? Bang up job so far pal."

Hermione and Sam's eyes both widened. Y/N was mouthing off to a bloody Angel. An angel. Hermione was stunned while Sam was anxious.

He had dealt with Angels before. They were not sweet cherubim riding clouds in nappies playing harps. They were vicious warriors who would smite first and ask questions later.

Castiel stepped right into Y/N's face:

"In an instant I can snap you out of existence. You should show me some respect."

With that he was gone. Just gone with nothing more than a flutter of air. Y/N turned to his girlfriend and teacher who both looked at him with the same stunned expression as he muttered:

"I didn't think angels were supposed to be dicks."

Sam replied quickly:

"Y/N, look it's a lot to take in but... this is good news".

"How?" Y/N asked with obvious frustration.

"There are good guys out there"

"So if he's an angel then what. There's a God?"

"Yes. Castiel, is one of his angels" Sam smiled. Y/N though, wasn't impressed:

"I'm not buying it. If there's a God out there and he sent Castiel to watch over me then why me? Why would he give a shit about me?"

"Y/N...." Hermione started but Y/N kept ranting.

"I mean I've saved some people, right I figured that equaled out the killing cos they were evil pricks but..."

Y/N breathed in frustration.

"Baby what's wrong? Why has this upset you so much. I thought you'd be happy to know an Angel is looking out for you, let alone God" Hermione asked confused.

"I-I just can't get behind it. I mean if God doesn't exist fine. Bad shit happens to good people. That's how it is. There's no rhyme or reason. It's just random, horrible, evil shit. Ok I get that, I can roll with it. But if he is out there, what the hell is wrong with him? Where the hell is he while all these decent people are getting torn to shreds. When my father was murdered... when I was...."

Y/N stood up and turned as he paced in frustration. He stopped shocked as Castiel suddenly appeared in front of him again.

"Where did you go?" Y/N snapped.

"I was getting permission" Castiel answered. Y/N looked at him puzzled before Castiel grabbed his arm and twisted it, quickly dropping a grunting Y/N to a knee. Hermione gasped. She had never seen her boyfriend manhandled like that. Punched once by Jacob, but never like this.

Castiel started chanting what Y/N recognised as Enochian when suddenly the birthday boy grunted and then yelled as a searing pain shot up his left forearm. It was blistering, agonising, even with his ability he couldn't block it out. It lasted about 20 seconds before Castiel released Y/N and he fell to the floor.

Hermione rushed to her boyfriend as he held his arm in pain but tried to stand. She helped him up as he looked at Castiel, asking still in pain:

"What the hell did you do?"

"I equipped you with today's lesson with Sam. Hold your arm out to the side. Do not point it at anyone or anything you love."

Y/N was somewhat puzzled but did what Castiel instructed and held his arm out to the side, facing midair.

"Bend your wrist down" Castiel instructed.

Y/N did and looked at Castiel again.

"Now think descend."

"Descend?" Y/N asked puzzled before he suddenly yelled in pain. A footlong silver looking blade had shot out the top of his forearm through his skin.

A/N: This location is how it unsheathes on Y/N's arm.

Y/N looked at his arm in pain as Hermione looked at the sleek metal blade piercing through her boyfriend's skin in shock. Castiel spoke calmly:

"It's an angel blade. It's indestructible and forged with pure matter in Heaven. It will kill anything in creation. Think ascend."

Ascend Y/N thought, groaning again in pain as the blade shot back up his arm. He looked shocked at his wrist as it was healed instantly, there was no scarring, no blood, nothing. Y/N looked up with a large smile and looked in the angel's eyes.

"Ok so that is bloody awesome. Thanks, Cass"

Castiel seemed to smirk, ever so briefly, before muttering: "I'll be in touch"

With that he was gone.

Y/N held his arm which was still hurting as he sat opposite Sam, Hermione rubbing his other arm, herself still trying to process everything that had just happened.

"So" Sam said, trying to collect himself. "Let's take five and then go over today's lesson. Angel blades. Rare as hell, can kill anything. Anything. If you're ever stuck, in a bind against any dark creature or even an evil witch or wizard, one snap of your wrist and you can now take them out."

Y/N smirked. He didn't want to take a break. He wanted to try out his new toy.

—~—

The lesson went well and as it concluded Y/N and Hermione walked to the creature Reserve hand in hand.

"Thanks for coming today babe, I'm really glad I got to spend this time with you." Y/N smiled.

"Of course love. It's your birthday, of course I want to be with you." Hermione returned the expression.

They spent the afternoon going through the Reserve with Barnaby and Liz Tuttle. She was working in the Reserve now. Y/N smiled at the adults as they held hands.

"I seem to remember telling you to confess B" Y/N teased.

"Yeah. Thanks for that little bro. I kept my promise and did as soon as Liz got back." Barnaby said with an adorable blush. Liz smiled at her sweet bulky boyfriend and turned to Y/N:

"Yes, thank you Y/N. I had loved Barnaby since fifth year but was never brave enough to tell him."

Liz was part of Dean's crew at Hogwarts and Y/N had been friends with her for years, just like Barnaby. She was a Slytherin like Dean and Barnaby and an avid lover of Magical Creatures. She was also one of the kindest people you could ever meet.

A devious smirk grew on Y/N's face:

"Just remember what I told you B, eldest son named Y/N, or at least be one of your groomsmen".

Y/N chuckled as Liz got embarrassed, Barnaby blushed and Hermione slapped her boyfriend across the back of the head.

—~—

It was a fun afternoon, Y/N caught up with all of his old friends- Welshy, Chuckles, Hessie, Samara and Frumoasa. Charlie had forced him to yield about six times. Y/N had gone to see the Leviathan as well. Hermione was gobsmacked at the size of the beast as it surfaced. Y/N communicated to her that the majestic animal was very apologetic for the harm it had caused while it was bewitched.

As they were leaving to go to dinner Barnaby called out to Y/N.

"So don't forget to be here at exactly one next Sunday. You, Sam, Dumbledore and Newt are going to be setting up the Dark creature biome. It's gonna be pretty awesome."

Y/N smiled as he bid them farewell and he and Hermione went up to the castle for dinner.

"Oh no babe" he said suddenly as they were entering the castle.

"What's wrong?" Hermione asked worriedly.

"It's your birthday next Sunday love." Y/N replied. Hermione rolled her eyes and grinned as she replied:

"So I get to spend my birthday watching my boyfriend wield amazing magic with Albus Dumbledore and Newt Scamander? Sounds good to me."

Y/N smiled at his girlfriend and wondered what he did to deserve such an amazing girl. They went to dinner and had a relaxing meal with their friends before Hermione whispered in Y/N's ear.

"Let's spend the night in our special place. I want to be alone with you for your birthday."