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Stiles x sister!Reader
Stiles and his father both looked up when the youngest Stilinski, Anna, came storming through the front door.
"Hey, kiddo, how was school?" Noah asked, only to be brushed off as the girl raced up the stairs and into her bedroom, promptly slamming the door shut behind her. Stiles flinched slightly, then looked over at his father, who only raised his eyebrows at his oldest child. "You want to take it or should I?"
"I got it," Stiles said, rising from the couch and making his way upstairs to his little sister's room. He knocked gently on her bedroom door, biting his bottom lip softly. "Anna? It's me." He said, a choked sob coming out as his reply. He immediately forgot about respecting her privacy as his big brother mode kicked him, turning the door knob and walking into the room.
There, curled up on her bed was Anna, her face buried in one of her pillows as she burrowed herself under her comforter. Her eyes were squeezed shut and her hair was falling messily into her face, her cheeks flushed and tear stained.
"Oh, Anna," Stiles whispered, shutting the door behind him and walking over to her bed, lifting the covers and crawling in beside her.
Anna scooted over just enough to make some room for her older brother, only to be pulled back into his warm embrace. She didn't hesitate to bury her face into his blue hoodie, wrapping her arms tightly around him and gently grasping the back of it in her fists.
"What's wrong, kiddo?" Stiles asked, resting his chin gently on the top of his sister's head as he rubbed her back softly.
Anna whimpered softly, gasping out a soft breath as she pressed herself closer to her big brother. "I'm so stupid."
"What? Annie, what are you talking about? You're not stupid," Stiles said, tangling his fingers into the younger's hair and softly massaging her scalp.
Anna sighed shakily, squeezing her eyes shut. "It's Jake." She whispered. "He...He cheated on me."
"He what?" Stiles snapped, rage and anger in his usually soft and calming voice. Anna whimpered at his loud change in tone, pressing her head further into his chest and clenching her eyes shut tighter. Stiles kissed the top of her head gently and mumbled a soft apology, running his fingers tenderly up and down her back.
"I'm so dumb, Stiles." Anna laughed sadly, shaking her head. "I was with him for a year. A whole year and I never knew."
"Oh, Annie, you're not stupid," Stiles whispered, pressing a soft kiss to his little sister's forehead. "Jake is a jerk. Jake the jerk." He joked softly, beaming proudly when he managed to get a soft laugh out of the younger Stilinski. "Hey, it's his loss. Any guy would be lucky to have you. You're so beautiful, and so smart, and you have an amazing level of sarcasm given to you by yours truly." He grinned, laughing when she gently hit his shoulder.
"You suck." Anna smiled, wiping away the remainder of her tears and resting her head gently on his chest. "You mean it, though? Really?"
"Really, really." Stiles promised. "Hey, have I ever lied to you?"
"No. Never." Anna said softly.
"There you go." Stiles smiled gently, pulling back just a bit to brush the hair from his little sister's eyes. "I love you, kiddo."
"I love you too, nerd."
Stiles smiled, squeezing his sister gently. "How about you and me hit the couch and watch some Harry Potter?"
Anna's eyes went wide and she looked up at her big brother. "You...You don't want to watch Star Wars? Are you serious?"
"Nah, we always watch Star Wars. Let's watch one of your movies." Stiles grinned, brushing her hair gently away from her shoulder.
Anna broke out into a big grin and tackled her big brother into a hug, burying her head into his neck. "You're the best." She said, her voice muffled by his shirt.
Stiles laughed and hugged his little sister tight, pressing his face into her shoulder. "Love you too, Annie."
A/N- I hope you enjoyed!! This was a lot of fun to write! Love you guys!! ~Hayden
