It was a normal fall night in London. Sheets of rain pounded down on the sidewalk, the rain was so intense you could barely see. Inside the flat of 221b Baker Street Sherlock and John were cozy in their cluttered, chaotic home. Sherlock had his eyes closed, hands placed under his chin in his usual thinking pose. John was sat in his chair on his computer typing, most likely for his blog. Suddenly, a loud knock cut through the silence. John started to get up but Sherlock beat him to it. The door slammed before John could even see who was standing there. "Mycroft." Was all Sherlock said, and John nodded. Another knock came from the door this time it was softer and the voice that followed was certainly not Mycrofts. "Sherlock let us in." Said a soft female voice. John had never heard it before. Sherlocks head snapped towards the voice and bolted towards the door and throwing it open. A short woman walked in. She looked just like Sherlock, if he was a 5'4 female. Sherlock stared at her with wide eyes and then did something John had never seen. He hugged her. She chuckled and squeezed him back. "I missed you sherl." She said warmly. Mycroft stepped protectively next to her. "I got her out of a.... bad situation" Mycroft explained as if that made any sense. "She was convinced you would let her stay here for a short time, I tried to explain that you already had a flatmate but she was determined." He shot her a glare.
"Of course she can stay here" Sherlock said almost kindly. He gave Mycroft a deadly look then pulled the woman next to him. Mycroft nodded and turned to leave. "Thank you Mycroft." The woman said softly. He turned and gave her a small smile then closed the door behind him. The woman looks straight at John unaware that he had been sitting there this whole time. She smiles kindly and holds out a hand to shake. "You must be Watson, I've heard a lot about you. I'm sherlocks sister Y/n."
John shakes her hand, he was totally unaware that Sherlock had other siblings. "Sherlock never told me he had a sister." John gives Sherlock a look, but Sherlock justs shrugs "you never asked."
Y/n chuckles. John couldn't help but admire her. She was stunning, her eyes sparkled and she had a little dimple when she smiled. His thoughts were interrupted by Sherlock bombarding her with questions.
"So what happened? Why are you here? What did Mycroft do this time?" John tries hides a smile, he liked seeing this side of Sherlock, the protective older brother not just the heartless detective. Y/n yawns "Sherlock I promise I will explain everything in the morning but can I please do go sleep."
Sherlock nods, unsatisfied with her answer. She gives him a hug and says something softly that John couldn't understand. She softly walks to sherlocks room and shuts the door.
"John don't you dare fancy her." Sherlock growls once the door to his room is shut.
"I don't know what you're talking about" John says crossing his arms.
"Yes you do and you need to stop that's my sister."
"Sherlock I have no idea what you could be referring to but I'm going to go to sleep." John says quickly trying to avoid the protective brother Sherlock. Sherlock glares at him as he walks up the stairs to his room, then flops down on the sofa trying to think of ways to make sure his sister stays safe.
A/n: Ayy look who's back with another bad story. This is actually terrible im so sorry. Thank you guys so much for all the support ily all! If you have any requests comment because I probably won't write for a while unless I have a request . Again sorry for the terrible writing and idea I tried (also takes place before S4 kind of just gonna forget about it)
