Requested via tumblr.
Readers age is 8 also this contains slight Malec.
Magnus Bane's life was lavish and carefree...until he adopted (Y/N). It's not that he didn't love them, he does with his whole heart, but adopting a young warlock who doesn't understand the shadow world and went through a traumatic past is hard. He had adopted (Y/N) almost a year ago so to celebrate they were having a small party.
Ever since (Y/N) was adopted they always called Magnus, Magnus. They actually used to call him Mr Bane but that didn't stick. Magnus didn't mind being called that, in fact, he hardly thought about it. He didn't want to pressure (Y/N) into calling him 'Dad' or 'Daddy'.
At first, he actually dreaded the idea of (Y/N) calling him Daddy. Some downworlders who knew Magnus when he first adopted (Y/N) would joke and mock him by calling him, Daddy. He didn't like the idea of being called Daddy because of these jokes. He thought he would have all respect taken from him in the eyes of clients and downworlders alike.
Magnus had gotten (Y/N) to have a sleepover with auntie Tessa so he could set up the party. When he woke he got straight to work knowing they'd be back at noon. Magnus thought back to the first night (Y/N) spent in his flat. They were scared understandable and to calm your nerves he put on some movies. Who doesn't like movies? It was his first happy memory with (Y/N) and kind of a tradition to have a movie marathon once a week.
Because of this memory, Magnus knew how to decorate the party. He set up the living room to look like an award ceremony and the entrance to a theatre which was actually a guest room he had set up. There was a red rug going from the door to a part of the wall he had decorated with velvet curtains and a black background where you would take pictures as if you were attending an award ceremony.
The main part of the living room was left kind of the same but not. He had moved the couches back a bit to allow for a bit more space and hate hung some fairy lights and some black and gold stars. There was already a disco ball for a light, (A/N:I mean it is Magnus's flat) so that was no issue.
The closer you got to the guest room where the movie was set up there was a popcorn machine and refreshment tables. The tables had red and white striped tablecloths on them. The refreshments consisted of 4 types of popcorn (Sweet, Salty, Plain and Chocolate) and normal movie food like sweets and hotdogs. He had also gotten a bartender to serve drinks at the bar which he had also decorated in red and white strips.
(Also theirs pic's of roughly what the parties based off of.)
Once inside the guest room you would see what he hoped to be (Y/N)'s favourite part. The movie. There was a queen bed that he had put black and gold sheets on. On the wall across from the bed was the TV. He had spread some bean bags, blankets and pillows around the room for the rest of the guests who didn't get into the VIP section aka the bed. He had hung blackout curtains in front of the windows and the room had a dimmer switch. The TV was set up so (Y/N) could play their favourite movies.
Magnus had invited a decent amount of guests. Since there was not many downworlders around (Y/N)'s age most were older which honestly didn't matter as they all loved (Y/N). Some of the guest's included: Raphael (who surprisingly is really good with kids), Tessa, Jem, Maia (Your babysitter during the day because of Raph's vampirism), his boyfriend Alec, Jace, Clary, Izzy and some other downworlders he knew and kind of you. When he was making up the guest list he realised something; most of (Y/N)'s company is a lot older. It made sense in a way. Not many children were turned to vamps or werewolves and warlocks were less common than ever before. Sure there were young shadowhunters but they didn't want to associate with downworlders. It was part of the reason Alec had suggested bring Max because they were close in age as he was 11 and (Y/N) was 8.
Magnus didn't have time to think of that though as guests started arriving. By half 11 nearly everyone was there. "Wow Mags. This is amazing." Alec complemented when he saw his warlock boyfriend. They had only been going out for a couple months but Magnus appearance still took his breath away. He had told everyone the theme and to 'dress appropriately'. He was in black slacks, a black glittery shirt, a red bow tie and of course gold accessories and his signature spiky sparkly hair with red highlights. Most people did fit the dress code in Magnus's opinion. Most of the girls wore dresses and skirts while some, like Maia, opted for a nice top and skinny jeans.
You could tell who would be up for what awards if it was real. In Magnus's opinion, Alec would be the front-runner for best dressed in his blue shirt and black slacks that looked perfect on him and that Izzy had clearly picked as there were no holes in his shirt. Izzy would be up for most dangerous in her tight black glitter dress. Raphael would be up for best suit in his velvet red suit jacket, black trousers and shirt. It was quite amusing to him as the party favours were awards and he thought they matched well.
The bartender was behind the bar and Magnus was pretty sure everyone was there apart from (Y/N), Tessa and Jem but that was intentional. Tessa texted Magnus saying they were coming up the stairs so Magnus told everyone to hide. The lights were off and everyone was in position when (Y/N) opened the door. "Surprise!"
"Oh my goodness! This is awesome!" (Y/N) squealed.
"Glad you like it," (Y/N) turned to Magnus. "I figured we should celebrate a full year of having you here."
"Magnus," (Y/N) said with a pointed look. "you just wanted to have another party, didn't you?" Magnus sent a wink their way and (Y/N) broke into a smile. "Well, I'm glad you did." After a quick glance around the room (Y/N) noticed something. "I'm not dressed right." They whined which earned a chuckle. "And neither are auntie Tess and uncle Jem."
"Definitely Magnus's kid," Jace whispered to Alec while laughing.
"Don't worry about us," Jem started. "we brought our clothes in aunt Tess's bag."
"What about me?" (Y/N) turned to their aunt.
"It's your house, isn't it? Go find something." Tessa prompted which sent (Y/N) running to their room. People laughed and said how Magnus had rubbed off on the child. Tessa and Jem went to get changed in the bathroom while Magnus finally opened the bar.
The party went down well with all the guest and most importantly (Y/N). Max and (Y/N) got on surprisingly well and were running around the apartment after they got their hands on some cake.
After about an hour and a half in the living room, they went into the guest room which was definitely (Y/N)'s favourite part. Magnus got (Y/N) to go in first to see and they loved it. (Y/N) got to pick who went on the bed which ended up being themselves, Max, Magnus, Jem and Tessa. (Y/N) took a few minutes to decide though. Everyone else claimed a bean bag or spot on the floor with pillows and blankets.
Magnus sat on the bed with his back against the headboard and legs stretched out under the covers on one half of the bed. Tessa and Jem sat next to each other on the other half and Max lay on his stomach with his legs going in between Tessa and Magnus, which was sort of a halfway line of the bed, while (Y/N) picked the movie and pressed play.
Once the movie began (Y/N) carefully walked from one side of the room to the bed, making sure not to crush anyone or their snacks. Once they got to the side of the bed were Magnus sat they pulled back the covers and climbed in. (Y/N) put Magnus's arm around their shoulder and snuggled into him.
Magnus grinned down at the site of his child nuzzling into him. He gave (Y/N) a squeeze with his arm and they smiled up at him. "Thanks, daddy. This is the best party ever." (Y/N) said kind of quietly although close by guest's heard and smiled at their adorableness.
Magnus's heart melted when (Y/N) said that. Never before had he been called dad or daddy. He never thought he'd want to be called that but hearing (Y/N) say it as if it was the most natural thing in the world was amazing. "It's not problem sweetpea."
"Can we do this every year?"
"Whatever you want." Magnus smiled down at his child while they turned their attention back to the movie. After the movie (Y/N) got up to change it and when they got back sat on Magnus's lap which he was more than happy to allow. He wrapped his arms around them, hugging them while they leaned back into his chest. Some people left after the first movie so they went from 15 to 10. It was mainly Magnus's friends aka (Y/N) aunts and uncles.
After the second movie ended a third was put on and this time they lost even more people. Raphael, Lillian (a vamp (Y/N) befriended while at the Dumort {Also the one from the books if you've read them}), Maia, Clary and Jace. Raphael and Lillian had gotten Magnus to make a portal to get there and back home because of the sun. Maia had to go and study and Clary and Jace had dinner reservations.
When (Y/N) put on the next movie they sat on the bean bags near the front and Max joined them. At some point during the third movie, Max and (Y/N) fell asleep. No one noticed until after the movie finished. Izzy decided to take Max back to the institute since Alec was going to sleep over. Magnus offered to make a portal for her and Max then one for Tessa and Jem. They accepted and by half 9 everyone was gone.
It was a good day although some people had been there for 9 hours. (Y/N) was carried to bed by Magnus who hadn't stopped smiling since (Y/N) called him daddy. They had called him dad during the movies sometimes and he loved it. Alec noticed so when Magnus got into the living room after putting (Y/N) to bed he brought it up. "So, is (Y/N) going to call you dad from now on?"
"Alexander you needn't clean this mess," Magnus snapped his fingers and cleaned the food away but left most of the décor up. "and I hope so. I'm actually kind of hoping for daddy. It just makes my heart melt."
Alec nodded and stayed silent for a moment but he couldn't hold back. He'd known Jace too long. "So is (Y/N) the only one who can call you daddy?"
"Oh shut up!" Magnus made a pillow fly into Alec's face which he swatted away with a mischevious grin.
"Just asking."
Magnus sighed. "I never thought I would have this. I would have a child who I loved and a man I truly love. It's more magical than I thought possible."
The pair didn't even hear the footsteps of (Y/N) as they walked sleepily down the hallway. "Why are you two still up?" (Y/N) rubbed their eyes.
"We were just talking darling. Go back to bed." Magnus stoked (Y/N)'s hair while he said it.
"Ok," they muttered sleepily and began to go back down the hallway. Alec walked over to Magnus and hugged him from behind. "Night daddy," (Y/N) said when they were just in earshot. "Night other daddy."
Alec froze and Magnus held back a laugh as (Y/N) continued down the hall to their room. "Don't even Magnus," Alec warned.
"Daddy," Magnus whispered before bursting out laughing.
"Be quiet. (Y/N)'s going to bed!" Alec warned even though his cheeks were red.
"I can't wait till I tell Jace," Magnus said while sitting on the couch.
Alec groaned then sighed gently. "At least they like me I guess." He mumbled with a slight smile. "It's not too bad to be called other daddy. Well, when it's from (Y/N)."
Magnus hummed in agreement. It melted his heart, he had his perfect family and he now considered himself a proper 'dad'.