Sherlock meets the Avengers- A crossing of fandoms

The East Wind Is Coming

"Heya, Holmes Boys. Holy shit. Is that Tony Stark? I'm gonna guess the other guy is John." The guard infront of Eurus' room greeters, glancing at the three.
"Hello. Don't call us that. Yes, and yes. I would ask how you have been or reduce it myself, but your clearly buisy. John, Tony, stay behind the white line. You don't want what happened last time someone violated that rule to repeat." Sherlock rambled quickly.
"Okay... I would ask for ID but I already know who you all are and I'm going to assume I'll get punched if I ask. So good luck." The guard said before swiping his card through a scanner and pressing a button.
"You assumed right." Sherlock stated before walking through the door, the others following close behind. Sherlock didn't even say anything once he was in the room. He pointed to the chairs againsed the wall, setting up his violin on his shoulder and beginning to play. It was the old duet he and his sister performed a while ago. After about the eighth measure, Eurus picked up playing with him. The song got increasingly complicated as it went on. Eventually, it sounded like a whole quartette was playing, each one playing different notes. But no, it was just the two of them. The song began to slow down until Sherlock dropped off for the last eight measures, playing a couple noted with his sister at the very end to Finnish off.
"Hello Sherlly. You dosed again a while ago, didn't you?" Eurus spoke, putting her violin down on her bed.
"Hello, Eurus. Yes. I had to quiet my mind to think. That idiot friend of yours has been causing more chaos." Sherlock stated flatly, placing his violin by the door and standing right at the edge of the white line.
"Oh he's far from an idiot, brother."
"In a medcal sender, not at all. As an urban insult however..."
"Hmm... True enough. You smell like America. Judging by your friend over there you've clearly built up a whole mounting of problems."
"Yes... He has forced my hand in several ways. Apparently you are part of the clue."
"Ofcorce I am. He always loved theatrics didn't he?"
"Yes he has. I see you still have heart eyes for the man."
"Oh shush you. You know for a fact that's not true. Besideds, you've got your boyfriend over there." Eurus smirked, nodding to John.
"Oh, cut me some slack. I was a dick of a brother all those years ago, although I knew no better at the time, so I have plenty of sibling rivalry that doesn't involve murder to catch up on. And by the sound of it so do you. We're not gay. Friends. He's married to a woman and I'm married to my work."
"Hmhmhm... I suppose you do. And how borring. Well then. What has my 'boyfriend' done this time?"
"So you admit it?"
"Even I can use sarcasm, Sherlock."
"I know that. I'm not hat much of an idiot. Anyway, to the point. The slimy bastard has kidnapped our parents and chopped a finger off each. Nailed them to the wall and wrote in their blood actually. Rather upsetting sight acctualy. At least they put up quite the struggle."
"Oh my. I bet you cried. How are the murder plans coming so far?"
"As much as I hate to admit it. I am human unfortunately. I would have liked if it wasn't as hard for me to lie to you as it is for John to lie to me. And I have plenty of murder plans already. I brought my harpoon out. The god of thunder and his brother are going to help me execute whatever it is that I choose."
"I figured that wasn't really his doing. The god of mischief isn't crazy enough to kill. I would know. I hope you enjoy yourself. Anything else you can give me to go off?"
"Yes acctualy. Here." Sherlock finished, slipping his phone into the transfer box and letting Eurus go through the most recent pictures.
"Sherlock! What are you doing!?" Mycroft growled.
"Oh calm down will you. She's getting better and she's not going to do anything with the camera on and someone acctualy competent watching."
"Yes brother! Please have some faith. Oh dear. He's quite the dick is he not? Hmmm...." Eurus stated, beginning to hum as she thought. "My brother! Your quite blind aren't you? He's sending you down memory lane, as you know. Traumatic experiences are at play. I may have been the hint, but not the clue! What was the most traumatiseing thing from our first experience together?" Sherlock groaned.
"Even for me, the entire run was awful. You really were the perfect enemy."
"Why thank-you brother. What a wonderful compliment. If not traumatizing, then go for memorable."
"The old house. The well... Bloody hell. I despise that man. He's making me show people I barely know and someone I know to well all the parts of my past I try to bury and I hate it." Sherlock growled.
"Oh honey, that's why he's doing it!"
"Believe me, I know. I swear, when I get my hands on him-"
"Oh, do send me pictures!" Eurus smiled as she gave Sherlock his phone back through the box.
"I plan to."
"Wonderful. Could we play one more song before you go?" She asked kindly.
"Oh, why not. We must hurry though. I only have eight more hours."
"No problem at all, brother." Eurus smiled before picking up her violin, Sherlock Doig the same.
"You take the lead, sister." Sherlock stated as he placed his violin on his shoulder and waited to play. When the music started, he couldn't help but chuckle.
"Really? Of all songs?" Sherlock smirked, still joining in. It was a battle song from a rather new game played in a different pitch to sound happy. Megolavania from undertale. Tony smirked at the song.
"What? You said fast." Eurus smirked, still playing.
"True. Different pitch to? Any relation to your emotional state?"
"Oh plenty."
"That's good to know." With that, the conversation ended and the song was played for a few muinets before everyone said goodbye.
"Thanks for introducing me by the way!" Eurus called after them as he was getting up. Sherlock acctualy laughed.
"You didn't need one." Sherlock smirked. "And they can guess your name just fine, sister."
"You are something, brother. I will see you again I'm sure."
"If I don't die for real this time, I can promise that. If I do pass, though, please promise me you would continue to try getting better."
"I promise brother. But I would guess to see you again. Now go, shoo. Before those pigs we call parents die of blood loss." Eurus smiled, shooting the group away. Sherlock nodded and waved before following the group that had already left the room.
"Didn't that woman do terrible things to you?" Tony asked.
"Yes, but she was broken in so many ways at the time. I don't hold it against her. Besides, she's still my sister." Sherlock stated before signing. "Back to work."