Hannah and Castiel have given up hope of being adopted. Once your older than 5, there is a less and less chance of having a mom and dad, and when your close to teenage years, there's no way you're being adopted. Expecially if you have secret powers. That's right, Hannah and Castiel have wings. They are hidden almost all the time so that Ms. Malcom doesn't put them in a science lab for cash. Hannah's wings are black and blue, giving her the power of fire, but Castiel's wings are white with black outlines on every feather, giving him the power of the shadows. Ms. Malcom puts them at the door to invite others in every Sunday. Sunday is adoption day, so Ms. Malcom wakes everyone up with a loud alarm.
"Everyone meet in the mess hall! Now!"
Hannah grabbed her favorite toddlers, Diamond and Dean, from their rooms while Castiel got his favorite tots, Ransom and Ryan. Their dog, Bandit, followed them obediently, getting a treat afterwards, into the mess hall for breakfast so that he can play with the kids during adoption times.
One day, a man with nice blue eyes and short blond hair walked in. Hannah pushed her dark hair back and put on a fake smile along with Castiel.
"Hi, I'm Hannah and that's Castiel. Welcome to our home," Hannah smiled.
"Yeah. I guess you're here to adopt?" Castiel asked. The man grinned.
"I am, actually."
"Well, Castiel will show you to Ms. Malcom," Hannah volunteered. Castiel started to walk him to the office, glaring at his twin. Hannah chuckled before helping the next guest.

With Castiel

As Castiel led Steve to the office where Ms. Malcom was located, the older man noticed how he knocked stiffly. He had no idea why the kid was so nervous until he heard how Ms. Malcom talked to him.
"Ms. Malcom? There's a man that wants to adopt," Castiel said politely.
"Obviously Asstiel-"
"It's Castiel," the boy corrected.
"Don't correct me boy! Go make yourself useful," the bitter old woman growled. Castiel nodded and walked out, but Steve's peaked hearing didn't hear retreating footsteps. "Hi. I'm Amber Malcom. Would you-"
"What about Hannah and Castiel?"

Castiel took off running down the hallway in glee. When he got to Hannah, he bounced with excitement.
"What?" Hannah laughed, not used to the bouncing ball of energy.
"You know the blue eyed man? He asked Ms. Malcom about us! He used our names!!" Castiel informed. "We might finally get adopted!"
"Calm down Cas!" Hannah laughed, holding the other twin down by his shoulders. "Stop yelling!"
"I'm excited!"
"I know. Me too!" Hannah grinned, bright blue eyes lit with excitement. "I can't wait to see if we're getting a mom and a dad or just a dad or-"
"I get it," Castiel chuckled.
"Hannah, Castiel," Ms. Malcom walked out with the blond haired man. "Go pack your bags. Steve Rogers is here to adopt you."

Hannah's POV

Castiel and I darted for the stairs
We ran into our room and started throwing all our belongings into bags. We were so happy we were finally being adopted. Finally getting out of the hell hole we currently call home.
"Finally! Adoption!" Castiel cried, zipping his duffle. I pulled a backpack over my shoulder and slung my duffle on the other.
"I know!" I laughed. "I wonder what our house will look like."
"Or what Dad is like."
"Or if we have a mom."
"Or uncles..."
"Aunts maybe!" I finished as we descended the stairs. I whistled for Bandit when we finally stood still in front of Dad. Ms. Malcom put on a smile.
"It was wonderful having you here with us Castiel, Hannah. I do hope you get a nice home and please come back to visit!" She said anything but happily.
"Uh, sure," we said together before laughing. "We leaving or not?"
"Come on," Dad led us out and into a nice car. As we pulled away, he spoke. "So, I'm Steve Rogers, you can call me Dad if you want. Another name you might know me by is Captain America," Dad said. I knew his name was familiar. "You are going to be meeting the team."
"The alien attack killed our brother," Castiel muttered. "Michael.... he was a good guy. He was, what, 13? If I see that Loki guy I'm going to-"
"Castiel, that's enough," I said, for Bandit had started to growl as well. "Stop talking about Mike. It hurts enough."
"Loki.... he was forgiven. He is a good guy now, I promise," Dad said.
"No. Look, I don't want him dead, but he will never be forgiven for what he did to Michael," I growled. "Dad, you don't know. We were 8 years old. You don't just recover from stuff like that. It took 4 years for the wound to heal, and seeing Loki is like tearing the scab," my voice got softer. "Please, we don't want to get hurt."
When the car stopped Dad turned to us and put hands on our knees. "Loki will not hurt you. Not if I'm around."

Third POV

Hannah, Castiel, and the german sheppard followed Steve into Avenger's Tower. Slinging her duffle on her shoulder, Hannah turned to Castiel and said, "wow."
They were used to the crowded atmosphere of the orphanage, not the light air around them. Castiel was staring at the moving robot arm when Steve said, "JARVIS, tell the team to meet in the living room."
"Yes sir," JARVIS replied.
"The ceiling talked," Castiel muttered as they entered the elevator before running his fingers through his very messy black hair. "Well, anything is possible I guess."
"That's JARVIS," Steve said. "He's our AI and close friend. He's kinda like part of the team."
".... so Siri in boy form?" Hannah asked, tucking a stray piece of black hair behind her ear.
"Um... yeah I suppose," he chuckled. They entered the living room and the twins stopped. Loki was sitting in front of them, smiling at Tony who told a joke. They bit back tears as they saw the scene of their brother's death in their minds, but Bandit just put his belly on the floor and growled.
"Hannah, Castiel, this is- hey, what's wrong?" Steve kneeled down in front of Hannah, who stepped away from Loki.
"Cas he's-"
"Yeah," Castiel grabbed his sister's hand. "I'm scared too."
"Why are you scared?" Loki stood up but Hannah flinched. "Oh."
"I promised Loki is better now. He's a good guy. He didn't kill your brother," Steve promised. "That alien got what he deserved. If it makes you feel better, he served his time in Asgardian prison."
"It still hurts...." Castiel whispered. "I miss Michael so much..."
"Me too, Cas," Hannah mumbled. Loki bowed in front of them in put his head down in shame. Bandit stopped growling.
"I'm sorry for what happened to your brother, Michael. I will forever regret what happened that day. I was mind controlled by the Chitauri and if I could turn it all around I would. Please, I'm sorry," Loki apologized. Hannah walked up to him and threw her arms around his neck in a forgiving embarace. Castiel followed, and Bandit licked his hand, causing Loki to chuckle. "Does this mean I'm forgiven?"
"...." they saw Hannah's ears go red as she blushed. They released him and shyed away from everyone in embarrassment.
"Okay.... well.... I'm Tony Stark aka Iron Man, that's Clint Barton aka Hawkeye, that's the other god Thor, that's Natasha Romanoff aka Black Widow, he's Bruce Banner aka Hulk, and your adoptive father is Steve Rogers-"
"Aka Captain America," Castiel answered. "I never thought we would be adopted by the Avengers. This is amazing."
"I know!" Hannah smiled, releasing Castiel's hand to readjust her duffle, which was coming unzipped. "Okay... I'm Hannah, and this is Castiel, and our german sheppard is Bandit."
"Well...." Tony rubbed his hands together. "Let's watch a movie I guess..."
Hannah's Snapchat dinged so she went to see what it was. When she saw that her friend had taken a picture of the Avenger's Tower and said "yooo its so much cooler in real life" she secretly took a picture of all the Avengers from her side of the room. Castiel had noticed and gave the camera a smirk.
"Hey Zoe, check out who just adopted me. Shh don't tell," Hannah texted before sending it. Zoe blew up her phone.
WHAT
HOW
WHATS GOING ON
IM CONFUSED
WTF
OMG HOW THE HECK DID U GET THERE
OH HI CAS
So when Hannah's phone starting dinging uncontrollably, she shut it down as quickly as possible, embarrassed. Loki stared at her in confusion and she laughed.
"I just told my friend who my new family is," Hannah smiled. "She'a probably going to keep sending me messages until her thumbs get tired."
"So she's one of those people?" Loki asked.
"Yeah...." Hannah knew that if one of them didn't speak it would get awkward. "So.... have you read the Maze Runner?"
"God don't remind me," Loki threw his head back dramatically.
"Okay...." Hannah grinned. "What about video games? Do you play Assassin's Creed? Farcry? Call of Duty? Roblox?"
"I think I've played the Assassin and Call of Duty," Loki said. "I've also played Outlast."
"And he screamed like a girl at every jumpscare!" Tony teased, causing Loki to start blushing. "He may be the god of mischief, but any horror game terrifies him. Outlast, the Park, White Noise Online-"
"Five Nights at Freddy's," Steve added.
"Oh he hates that game. It's so funny," Tony laughed. Loki's face was a deep shade of red.
"I've beat most of the FNAFs. But then again, I'm obsessed with Supernatural and Ghost Adventures," Hannah chuckled. "I'm way into scary stuff."
"No you're not. You watch Supernatural because you have a major crush on the boys and you watch Ghost Adventures because of Zak Bagans. Don't lie," Castiel smirked, earning many "Oooh!"s from Tony and Clint.
"You watch Scooby Doo because you like Daphne so I don't even wanna hear it," Hannah shot back. "Anyway, Misha's adorable."
"Can't lie, kiddo, you're right," Nat chuckled. "Misha's freaking adorable you guys."
Castiel was busy blushing. He tackled his sister, held her arms down with his knees and started to tickle her entire upper body. She started laughing immediately. "CAHAHAS NOHO FAHAHAIR!"
"All is fair in tickle wars!" The boy grinned, blowing a raspberry on her stomach. She shrieked and kicked Thor in the chest on accident. The god of thunder coughed a little and caught the foot before it could do more damage.
"DAHAHAHAD HEHEHELP!" Hannah cried, writhing under the playful attack.
"Come on Castiel. Release your sister," Steve chuckled. Castiel pretended not to hear him and Thor sighed, scooping the boy off his sister and tickling him mercilessly.
"Yeah Thor! Get 'em good!" Hannah encouraged after catching her breath. Tony was grinning at them while Loki rolled his eyes. They were all startled when Thor flew backwards into Loki, dropping Castiel. They saw a flutter of white and black wings before they disappeared again. Hannah gasped a little.
"Cas your-"
"I... I know..." Castiel hissed. Bandit moved in front of the twins protectively.
"Owww...." Thor rubbed his arm.
"Oh get up Thor. He's a child," Loki chuckled. "Whatever force that hit you couldn't have been that hard."
"It felt like a hundred Frost Giants smacked me into a different dimension," Thor summed up.
"Yeah.... Sorry about that..." Castiel twiddled his fingers. "You kinda started on my shoulder blades and they just fought it."
"What just fought it?" Clint asked.
"Wings," Cas said. "Hannah and I have wings."
The twins rolled their shoulders and the beautiful wings went on full show. Hannah made her fists burn with a blue fire while her eyes burned with the flame of her soul, flickering around eye sockets. Castiel bent the shadows around him and his eyes flickered black- all black. The Avengers were terrified, yet amazed. How could two orphans hold such beauty and power?
"Wow....." Bruce muttered. "Why didn't you show us these before?"
They stopped the show but kept their wings out. "We were scared," Hannah mumbled. "We knew that if we told anyone Ms. Malcom would sell us off to scientists to be tested on forever. We didn't want that."
"Who told you that?" Natasha asked.
"We didn't need to be told. We saw it happen. The Winter Soldier: brainwashed. Michael's friends could change into wolves, so they were kidnapped and tested on," Castiel said, playing with Bandit's fur.
"How did we go from Five Nights at Freddy's to this?" Clint asked. Tony finally put in the movie John Wick Chapter 2.

After the movie, Hannah and Castiel were asleep on the beanbags. Bandit was relaxing between them, his eyes warm and happy as Hannah had her head on his upper paw and Castiel's back on his side. The Avengers grinned at the bundle of wings and bodies before Steve shook Hannah awake. She shook her head and mumbled, "'m comfy."
"I know. Let's get you to your new bed," Steve grinned. Hannah rubbed her eyes in the most adorable way possible (obviously without knowing) and Steve loved it.
Castiel sat up and rubbed his different-deminsion blue eyes. Bandit followed them to the elevator and all the way to their rooms, where they hugged each other goodnight and walked to the beds.

Finished with chap 1. P.s- I am basing the way Castiel and Hannah look off Castiel from Supernatural. It was the only way I could think but he is not the angel.