A/N: Not much to say here. Let's get going, eh?

MATT

Everything went through his mind in repeated, looped flashes.. Every sight he ever saw. Every voice, clang, strike, everything he ever heard. It all flew by right through him. Memories and moments of the old world. As the water splattered and poured on him Matt leaned against the shower wall with one hand, his right hand running through his wet wair. Rain. The very thing the water reminded him of. When he fought off the assassin in rain, the first time he saved Karen's life. Which happened to have been the same day he met her. Then there were other memories, the sounds of his father losing each boxing match through the TV. Stitching him up over and over. His first drink at nine years old. Hearing his father win one of his matches through the TV, the crowds cheering his name.

"Murdock! Murdock! Murdock!"

The memories of his father and the cheering almost made a smile, it made him feel like he was flying. And then…the flying stopped and it all went down. The memories that came next made him feel as if he were falling eternally through the depths of hell, the merciless fires burning pain into him as his own heartbeat increased upon the memories. Feeling his father's dead body as it bled on the alleyway. His training with Stick. Stick leaving him behind. Feeling the wrapper bracelet he made for him as a child. Foggy's anger at him for being Daredevil. The memories repeated themselves over and over as they paced through Matt's mind faster and faster and faster. More. More and more. Until he snapped. Matt let out a yell as he punched the wall in front of him, a fist-sized hole appeared in the wall as Matt's knuckles hardened, rashes of red over it. He took several heavy, repeated breaths before he managed to somewhat calm himself. Sinking into his rage made him feel as if he were a completely different person, he couldn't even recognize himself when he was in such a stage. Matt let out more calmed breaths before his right hand slapped the shower knob to the end as the water stopped pouring. It left him drenched inside. A few minutes later, he was fully dressed as he slipped a black t-shirt on. An hour later, he was on a sparring mat with Bobbi Morse, one of S.H.I.E.L.D.'s most trained and skilled agents. Arguably the most along with May. Or so, that was what Coulson had said. In the months since, Matt had sparred with every fighter within base. Bobbi, Daisy, Hunter, Mack, Clint, May, Coulson. Even Steve Rogers himself. He'd managed to take them all on in single hand-to-hand combat, with Steve himself admitting that he'd won mostly due to his enhanced physical stats more so than his combat ability. Ever since, almost everyone in base had made it their personal goal to best him. So far, no one had succeeded and Matt was intent on ensuring no one would.

"What's with the bruise?" Bobbi asked, noticing Matt's right hand as she did a tornado kick towards him.

Matt skipped backwards avoiding the kick before dropping to the ground and sweeping his left leg 270 degrees, knocking her off her feet. Matt sprung on to his feet as Bobbi kip-upped back to her own.

"It's fine," Matt shrugged as he swung his fist, a strike the Bobbi side-blocked before elbowing Matt in the stomach, briefly staggering him.

Bobbi attempted to throw a punch but Matt blocked it before holding her arm above his shoulder before flipping her over his body and onto the sparring mat. Matt turned away as he grabbed two towels, tossing one to Bobbi. He wiped the sweat off his face and arms as Bobbi did the same.

"Came close this time," Bobbi sighed.

"You said that last time too," Matt pointed out.

"Can't be number one forever, Murdock," Bobbi said with a smirk. "Someone'll get to you. Eventually."

Matt suddenly tilted his head in the direction of the door as he detected a sound. His senses peaked as he heard the sounds of an engine slowing to a halt, jet wheels touching the ground, the sound of two flying people slowly descending to the ground. Matt could also sense the frown on Bobbi's face as she questioned his sudden change in demeanor.

"What is it?" Bobbi asked.

"Stark and the others," Matt answered. "They're back. And they've brought some people. I'm hearing two different heartbeats."

"Must've done it for a reason," Bobbi said with a shrug. "Let's go meet our new friends."

It took not more than five minutes until Matt and Bobbi were in the hangar room, a space larger than five football fields. Matt and Bobbi walked no further than a few feet until they had met up with the others. Steve, Tony, Vision, Daisy, and the two new ones. Matt had an arousing suspicion about the two of them based on his senses. One of them was an older man, a scruffy beard and…a form of metal…in his skeleton, inside his body. The other was a younger man, closer to Matt's age. Maybe a few years younger. He was clearly Daisy's age. He could sense some form of lightning-based energy in his body, his heartbeat and metabolism were exceedingly fast, functioning at speeds far beyond superhuman. Perhaps it had to do with his powers. Either way, Matt was hesitant with the two people he had met. Or at least, the two people he was about to meet.

"So…" Bobbi said, deciding to be the one to initiate the rather awkward but interesting conversation that was to come. "Who're our new friends?"

Matt could hear the younger one speak up first, the older man remained silent as Matt could hear him cross his arms and sense him glaring around the area.

"I'm Barry - Barry Allen," the younger man said as he gestured to the older one. "This is Logan."

"Agent Bobbi Morse," Bobbi said as she and Barry shook hands, a rather negative vibe from Logan was more than convincing for her to not to do the same with him.

Matt stepped forward, presenting himself to Barry as he held out his own hand. "Matt Murdock,"

Barry shook his hand as he scrunched his eyebrows in confusion upon seeing Matt's eyes. "Your eyes, are you-"

"Blind," Matt explained. "But don't worry, I can hear your heartbeat, your blood pressure, metabolism, and neurological functions. All of which are operating a lot faster than a normal human. Surely, that makes you our interdimensional traveler."

Barry let out a forced half-chuckle. "Can't say that's the weirdest thing I've heard a guy say to me."

Vision decided to take it upon himself to explain. "Mr. Murdock's vision may have been lost but his other senses, such as taste, hearing, and touch, have been propelled to superhuman functions. It is how he can detect all of us and his environments."

"Oh," Barry said sheepishly as Matt gave a simple smile.

"Still sure that's not the weirdest thing you've heard?" Matt asked.

"I mean," Barry began. "One of my closest friends survived being stabbed in the abdomen and being kicked off a mountain. I got my powers after being struck by lightning. Not exactly too weird but it's up there."

"Stabbed and kicked off a mountain, huh?" Tony cracked. "Now that's something else."

"We'll check up with the others and get them ready for debriefing," Steve explained. "Matt, Daisy, show our new 'friends' around."

"Got it, Cap," Daisy said with a nod, Matt simply nodded back.

"Hell of a place you got here," Logan finally said, his voice deep as Matt could hear Logan's head tilting, the older man looking throughout the area. "How'd you even build this damn thing?"

Matt, Daisy, Barry, and Logan walked through the halls of the main base as the door to the hangar closed behind them.

"S.H.I.E.L.D. calls it The Playground," Matt explained. "Old base of operations they made several years ago. The Director reactivated it after S.H.I.E.L.D. and Hydra fell."

"Yeah, Logan told me about that," Barry replied. "What exactly is S.H.I.E.L.D.?"

Matt and Daisy responded simultaneously. "Strategic Homeland Intervention, Enforcement and Logistics Division."

Logan scoffed. "Whoever made this goddamn place really wanted those initials to spell out 'shield', huh?"

Daisy couldn't resist her chuckle, which followed almost immediately. "Thing is, we didn't even name it that until a few decades later."

"You call yourselves strategic and you couldn't even put together those initials?" Barry asked incredulously.

Neither Matt nor Daisy had a response, the two eventually reached the end of a hallway as two rooms were across from each other. Rooms that were obviously for Barry and Logan.

"Gonna have to check in with May," Daisy said to Matt as Logan took off on his own, exploring his room.

"She still babysitting you?" Matt smirked.

Daisy gently flung her hand against his shoulder as she resisted a chuckle. "Don't be a smartass with me, Murdock."

"Today and every day that follows, Johnson." Matt smirked once more as Daisy rolled her eyes before grinning.

She turned her head to Barry and sighed. "You gonna be okay?"

Barry sheepishly pointed to himself as he briefly stuttered. "M-me? Y-yeah, I'm - I'm gonna be fine. Tha-thank you."

"Okay," Daisy said simply as she kept head down, running her hand through her hair as she turned away and left, her footsteps echoing until they receded.

Barry cleared his throat as he turned to Matt. "You two…you a thing?"

Matt shrugged and shook his head. "No, me and Daisy, we aren't. We just…we grew up in the same orphanage. Neither of us particularly lived with our parents for too long."

"Oh," Barry sighed. "Sorry. I, uh…I know what that's like."

"Yeah, well, some world we get to live in," Matt took a few moments to repeatedly nod his head before he patted Barry's shoulder. "We'll call you when it's time for debriefing. Don't worry about it, it's quick and simple."

"Right…thank you."

Matt left as his senses detected Barry entering his room, setting his backpack and stuff on a bed. He could hear sighs of relief from, even the sound of his fingers running through his brown hair. Eventually, Matt forcefully restricted his senses as much as he could, focusing on making his way back to the rest of the team.

Later, Matt, along with everyone else, was in the mission room as Coulson and Steve went over the debriefing process with them.

"As far as we know," Steve began, his hands at his hips as he spoke. "Our traveler goes by the name of Barry Allen. He's 27 years old at the moment and he claims to be from another universe. Another earth."

"So, basically the multiverse theory?" Fitz asked. "It's real? The multiverse?"

"According to him?" Tony cut in. "Yeah, it is. Our little traveler says he's from 'Earth One'."

Mack frowned. "So what earth does that make us?"

Tony shrugged. "Dunno. Could be Earth Two. Earth Nine? Could be Earth Eight-Hundred for all we know."

"The point…" Steve said, hoping to focus the team back on track. "is that we have this traveler with us. We know he's enhanced, gifted. He has superhuman speed with a trail of lightning, can create and manipulate his own lightning, phasing, and a whole lot of other abilities."

"Wait, wait, wait," Sam interrupted, panic seething into his voice as he raised his arms. "He's infected? He's gonna turn…into a runner? Into one of them?"

Matt shook his head as he leaned against a wall. "He's not infected."

The sounds of everyone turning their heads to face him filled Matt's ears as he remained still and silent, waiting for someone to ask the question. It came sooner than he thought.

"How do you know?" May asked.

"Every time I've been near or close to an infected person," Matt started. "I can hear a sort of energy inside. Some kind of negative energy and there's always a sort of virus I can sense. But with this guy? There's no virus and…the energy that I heard inside him? It's some sort of positive energy. Almost like a polar opposite to the runners."

"A polar opposite to the runners?" Daisy asked incredulously as Matt nodded.

"You're sure?" Wanda asked.

"As sure as I can be," Matt responded.

Clint rose to his feet from the chair as he looked at everyone. "Look, you guys know me, I've never been a smartass or nerd kinda guy. But if this kid has energy opposite to the runners? Does that mean we can…kill them? Cure them?"

Bruce Banner nodded his head as he and Fitz exchanged flabbergasted looks. "It…could be possible. If Mr. Allen's blood contains energy that is directly opposing to the runners-"

"We could create a biological-based sample-" Fitz continued.

"Use it to reverse the effects of the runner virus-" Tony carried.

"Hold up," Lance Hunter said as he rubbed his temples. "Just wait a minute-"

"You're saying we could actually have a cure?" Rhodey asked, excitement spiking up in his voice.

"Perhaps, we might." Vision confirmed.

"We're gonna have to finish with debriefing and all but once it's said and done," Coulson nodded as a glimpse of a smile filled his face. "We might actually have a cure to this whole thing on our hands."

Matt smiled as he spoke. "The New World."

"It's coming sooner than we thought it would." Clint said, relief in the sighs and deep breaths he gave was clear.

"Let's hope it comes as soon as it can," Daisy added.

Fitz nodded. "For Simmons. For Agent Romanov…for everyone. That we've lost."

Steve walked forward as he looked down at the remains of Barry's old Tachyon device, Matt could hear his footsteps and the breaths he took. Steve nodded his head.

"We question these two," Steve ordered. "We get their help…and then we rebuild. The New World is coming and it's going to need us. All of us."

"Well…" Tony said with a shrug. "Let's get to rebuilding, then."

Coulson explained the debriefing process to everyone as Matt lost track and attention of the conversation. He unfolded his arms as he got off the wall he was leaning on, turning around and leaving the room. Matt had lost interest to play part in the conversation, there was another conversation he decided to have. Minutes later, Matt had made his way to the door of Barry's room. He could hear the sound of Barry's fingers brushing against a material…he was holding a suit. A scarlet-maroon one from Matt could detect. He brushed his knuckles along the wooden door before tapping them against it as Barry faced him in a reflex.

"Bad time?" Matt asked.

Barry shook his head. "N-no. Not at all."

Matt walked inside as he closed the door behind him. "What's, uh…what's with the suit?"

"It's a long story," Barry half-explained. "But back on my world…they called me The Flash."

"Your vigilante name?"

"Yeah." Barry looked back to his suit. "All this time, I used to think that putting on the suit was what made the Flash."

Matt shook his head. "Except it isn't. It's not the suit or your abilities that're fighting, it's the person who has them."

"To think it took being stranded worlds away from the people I love to realize it," Barry said with a sigh. "Suit or no suit…everything I've done, everything I can do…it's not enough. It's never been enough. I stood, I fought, I had people to help me. And it was never enough. For every thing I won, I lost twice as much. It's like-"

"Taking one step forward and two steps back," Matt interrupted as he could sense the glance of surprise from Barry. "It's like you're stuck in a pit and you wanna escape the darkness. Climb back to the light. But no matter what you do, you just-"

"Sink deeper and deeper." Barry finished as Matt nodded with a scoff.

"You're not the only one who's gone through this kind of thing," Matt assured.

"Maybe," Barry said as he looked back to his suit. "Maybe not. But either way…I'm the only one I know who can't fight it. Not this time."

"What're you saying?"

"I'm done. I'm done being the Flash. I'm done wearing that suit."

A/N: This story is going to be part of a multiple-story based series. This story is going to be rather long, so except plenty of chapter.