Requested by weirdlookingGirl: Y/N is Tony's daughter, and she and Peter are dating. They're on a field trip when Thanos' minions come down to get Dr Strange, and so they join the fight. Y/N goes to Wakanda whilst Peter joins Tony in space.

Peter and I sat on the school bus that was taking us on the field trip, his arm around me and my head resting on his shoulder as we drove along the bridge.

"So, you looking forward to the museum?" he mumbled as he kissed my head.

"I'm a Stark, of course I am." I scoffed.

"Silly me." he teased, making me chuckle and shake my head as I pecked his lips. Peter and I had met two years ago, when my dad had recruited him for the Avengers as Spider-Man. My dad who happened to be Tony Stark. Peter and I had hit it off immediately, just to my dad's slight annoyance. But considering that I had the same powers as Wanda and therefore often trained with Peter, there wasn't much that he could do to stop us from getting closer and feelings from developing. Hence why I was currently sat by Peter's side, cuddled under his arm and a week away from our two-year anniversary.

"Maybe we could sneak away at some point, find a bathroom or a quiet place in the museum." Peter mumbled into my ear, making me smirk and look at him as he started to subtly leave kisses on my jawline.

"Who are you and what have you done with Peter Parker?" I teased.

"I'm still your Peter, just your horny Peter." he returned, making me laugh and shake my head. Suddenly, all of the hair on his arm that was resting against the back of the seat in front of us stood up, making us both look at it.

"Peter-."

"I know, my senses are going crazy." he mumbled as he looked over his shoulder.

"Holy shit." he muttered. I followed his gaze, my eyes widening as I saw the doughnut-shaped spaceship floating over New York.

"I'll get Ned to cause a distraction. Call your dad." he spoke quietly, making me nod as I dug my phone out and he leant forward to talk to Ned.

"OH MY GOD! WE'RE ALL GOING TO DIE!" Ned yelled, making all of the students gasp and rush to the back of the bus to look at the spaceship.

"That worked." I chuckled as Peter clicked his web slingers up.

"Come on, babe." he spoke as he climbed out of the window. I got out after him, both of us pulling our masks on as he wrapped his arm around my waist. I held onto his neck, knowing the drill by now as he launched us off of the bridge. He shot a web and we started to soar, his arm hooked tightly around my waist and my face buried into his neck as we flew. Soon enough, our feet landed against the ground again, making me pull away from Peter as we looked around at the carnage that the alien ship had already caused.

"FRIDAY, call dad." I demanded as I clicked on my bracelet that my dad had given me, Peter doing the same to his watch. Our suits started to form from the jewellery, the material spreading up our arms and legs before soon enough covering us as we looked around.

"What's up, kid, I'm kind of trying to stop world elimination here." Dad picked up, his strained voice telling me that he was in the middle of the fight.

"I know, Pete and I are right underneath it." I scoffed as I looked up at the ship. He paused.

"Sorry...you're what?" He returned my scoff.

"We joined the fight." I shrugged.

"For fucks' sake, of course you did. Look, this is no joke, so I need you to listen to me very carefully. We need to go to Titan, that's where Thanos is going. I need Peter to join us, we don't have enough of the team here. You need to go to Wakanda, that's where Vision is. Your sole mission is to protect him and make sure that Thanos doesn't get the stone. If he does, well...it's game over." he spoke. I gulped harshly, my eyes wavering as the enormity of what we were facing hit me. I looked at Peter.

"Babe, you're going to space." I nodded. His white eyes widened.

"I-what?" he scoffed.

"My dad needs you up there, and the Wakandans need me to help protect Vision. We need to go." I nodded. He stared at me, his eyes still wide. I could tell that his mouth was also hanging open underneath his mask.

"What-babe, I can't go to space." he shook his head.

"You have to, Pete." I stated as I walked towards him.

"No, I don't-."

"Peter." I cut him off as I took his face into my hands. He gulped and looked at me, making me sigh as tears pricked my eyes.

"This isn't just another alien invasion, Peter. If Thanos gets all of these stones, we're fucked. We need to stop him, we can't even give him a second of a chance to get the drop on us. So, my dad needs you in space, and I need to be in Wakanda. We have to do this." I choked and shook my head. He sighed, his hands raising to hold my waist as we stood there. I could tell that he was also crying underneath his mask, our foreheads joining as we held each other.

"We have to go, Pete. We have to. But I love you." I choked.

"I know. I just don't want to. But I love you too. Look, I know that you'll be in Wakanda, but make sure that nothing happens to May. I can't lose you and I can't lose her." he shook his head. I bit my lip and looked at him.

"And you make sure that Thanos doesn't snap his fingers." I nodded. He chuckled and returned it before leaning down and pressing our lips together through our masks. I returned the kiss, my eyes squeezing shut as tears left them. I didn't want to let my mind go to the fact that this could be the last time that we would ever kiss, but we were about to go on another life-threatening mission. And that was the reality of the matter. I broke the kiss and looked at him.

"Go, Peter. My dad needs you, and I need to get to Wakanda. I'll see you when this is over, okay?" I nodded. He sighed and returned it.

"Yeah. See you soon, babe." he spoke before turning and firing a web at a nearby building before launching himself into the air and towards the spaceship. I gulped and watched him, tears rolling down my face at the idea that one of us wouldn't come back. I just had to hope that both of us would make it through.

I fired my energy into Thanos' soldiers, my teeth gritting as I managed to start pushing them back. Bucky stood beside me, his bullets tearing down the ones that I was missing as Steve hit them with his shield and Bruce ripped through them with the Hulk. I hadn't heard from my dad or Peter since they'd been launched into space, but if what was happening on our end was anything to go by, we were losing this battle. And we were losing it badly.

"Guys! Vision is under attack in the woods, we need someone there now!" Shuri yelled into comms. My eyes widened, my gaze locking with Wanda's as we met eyes. She nodded at me, making me return it as we both knew what to do.

"Wanda and I are on it." I spoke before aiming my hands towards the ground. My energy blasted out of my palms, making me shoot into the air as Wanda and I flew towards the woods. My eyes widened as I saw Vision through the trees, looking very beaten up as Thanos walked towards him.

"Wanda! I have eyes on him!" I yelled as we started to lower. We landed in between Vision and Thanos, the war lord's eyes widening slightly at our entrance.

"Wow. Stark has an entire team of super beings and you're who he sends? A child?" he scoffed.

"Don't underestimate me. I have more power in my little finger than you have in that entire gauntlet of yours." I spat, Wanda helping Vision up behind me as I blocked Thanos' path.

"Yeah? How about we test that theory, little girl?" he smirked before raising the gauntlet. My eyes widened, my hands shooting up and my power emerging from them as a ray of energy from the gauntlet shot towards me. It collided with my stream of power, making my eyes widen. Even through fighting it alone, I could feel the amount of energy that even four of the infinity stones held. No wonder all five were enough together to end half of all life in the universe.

"Wanda!" I yelled, my nose starting to bleed with the amount of power that I was using as Thanos started to walk towards me and push me back.

"I've got you!" she shouted in return as she appeared next to me and started to also fire at the purple alien. But it still wasn't enough. He was knocked back for a second, a groan leaving his lips before he started to push back against us. My eyes widened, my heart plummeting as I realised that Wanda and I alone couldn't hold him off. We couldn't win this. I looked over my shoulder at Vision, the man clearly too weak to even stand. Oh, god.

"VISION, RUN-." I was cut off by Thanos' fist colliding with my side, making me cry out as I went flying. I landed against the forest floor harshly, making me groan as I rolled onto my front. I looked up, my eyes widening as Thanos had also sent Wanda flying, and was closing the gap between himself and Vision.

"VISION!" I screamed as Thanos picked him up by his neck. The alien smirked, a choke leaving my lips as he closed his fingers around the stone in his head.

"NO!" he crushed the stone out, Vision's body losing all of its colour as it was dropped to the ground. I watched with wide and glossy eyes, my body too weak to do anything as Thanos put the final stone into its place on the gauntlet. The power ignited, a groan leaving his lips and burns shooting up his side as he filled with power. He looked at me and smirked as he snapped his fingers.

"NO!"

I panted heavily, my hand in front of my eyes to shield it from the burning light that had been caused by Thanos snapping his fingers. My eyes widened, a choke leaving my lips as he was gone. As was the gauntlet and the stones.

"Wanda? Oh my god, Wanda?!" I shouted as I stumbled to my feet.

"I'm here, honey, I'm here." I sighed in relief as she appeared from behind the bushes.

"He did it, Wanda, he did it, he snapped his fingers." I choked as she tightly hugged me.

"Hey, it's okay. We don't know if it worked yet, let's not be too hasty." she reassured, her eyes still burning red as she gently took my face into her hands. But I knew that it had worked. I knew from the fact that my insides felt like they were melting away.

"W-wanda, I...I think that it worked." I nodded, my eyes wavering as I looked at her. Her eyes widened.

"Oh my god...oh my god, honey, no." she shook her head, a choke leaving my lips as my legs gave way and I collapsed into her arms. She sank to her knees with me on her lap, tears leaving both of our eyes as she shook her head and gently stroked my hair.

"Don't leave me, come on, stay with me." she gulped, her shaking hand against my head telling me that her mind was working at a thousand miles an hour to figure out how to save me. But she didn't do anything. None of us could anymore.

"Wanda, I need you to promise me something." I choked, my legs starting to turn to dust as I lay in my mentor's arms.

"Anything, honey, name it, please." she shook her head. I bit my lip, tears rapidly leaving my eyes as the magnitude of what was happening hit me. I was dying. I was leaving my dad, I was leaving Peter. I had to hope that they'd figure out a way to fix this, but if they didn't, I'd never see them again. I'd never be hugged by my dad again, I'd never be kissed by Peter again. I'd never have him insist on watching 'Star Wars' and then make up for it by cuddling me throughout the whole movie. I'd never get to touch his soft curls, or hold his face again. I'd never wake up to him in the morning again. This was it.

"Tell my dad that I love him. Tell Peter that I love him. Tell them that I'm so sorry, that I couldn't stop him. I'm so fucking sorry." I cried and shook my head. Wanda returned the shake, her hand cupping my face as more of my body disappeared into dust.

"Don't be sorry, honey. You did all that you could, you were amazing out there. This isn't your fault. But I'll tell them. They love you so much too, honey, I know that they do." she promised. I nodded and bit my lip, my body feeling less and less like my own as the dust started to move up my torso.

"I'm scared, Wanda. I don't want to go." I choked.

"I know, but you're going to be okay. We're going to figure out a way to reverse this, okay? You'll see me again, you'll see your dad and Peter again. We'll meet again someday. I promise." she nodded. I returned it and looked at her, tears leaving my eyes as I disappeared more and more. I felt myself growing weaker, a breath leaving my lips as my eyes finally fluttered shut.

Peter's P.O.V

Peter sat on the floor of the jetti, his back against the wall and his head in his hands. He was just in a state of shock right now. They had been on Titan, they thought that they had won, but then Thanos had disappeared back to Earth...and had snapped his fingers. They only knew that for certain because they'd seen Doctor Strange and Peter Quill turn to dust right in front of them, but god knew who they'd also lost on Earth. Peter didn't want to think about that. The jetti landed roughly, making Peter gulp and look up.

"Come on, kid." Tony mumbled, gently patting his shoulder as he passed. Peter gulped and stood up, his body numb as they wandered down the ramp. He flicked his eyes over the team rushing out to get them, his eyebrows furrowing as he couldn't see Y/N. Oh, god. He couldn't see Y/N.

"M-mr Stark...where's Y/N?" he gulped as Pepper rushed towards Tony.

"Tony, oh my god!" Pepper cried as she tightly hugged him.

"Pep, where's Y/N?" Tony asked. Pepper pulled away, a tear leaving her eye as she looked between Peter and Tony.

"I'm so sorry, you two...we're still getting numbers in, but...it looks like she's gone too." she shook her head. Peter choked, his eyes wavering as tears started to fall from them.

"No...she can't be, no! We did everything to stop him, she can't be gone too." he choked and shook his head.

"Pepper, please, where is my daughter?!" Tony cried.

"I'm so sorry. I'm so sorry." she choked and shook his head. Peter's legs collapsed from underneath him, forcing him to the ground on his knees as he lost all feeling in his body. His heart stung, his entire body filling with pins and needles as he just stayed there.

"NO!" He screamed at the top of his lung, his hands falling into fists against the concrete as he leant forward.

"It's okay, Pete, it's okay." Tony choked as he collapsed on his knees next to the boy and pulled him into his arms.

"OF COURSE IT'S NOT OKAY! Y/N IS GONE AND WE HAVE NO FUCKING IDEA IF WE CAN GET HER BACK! SHE'S GONE!" he yelled, his eyes squeezing shut and tears rapidly falling down his face as his throat became raw. When he had left Y/N to join her dad in space, he hadn't let himself think of the possibility that one of them wouldn't make it through, mainly because they'd always made it up until this point. So the fact that he'd come back to discover that the worst possible outcome had happened was tearing him apart.

"I'm so sorry, Peter. We're going to get her back, I promise. I won't stop until she's back. I'm so fucking sorry, kid. I'm so sorry." Tony choked, his arms tightly wrapped around Peter as he held him into his body. Peter sobbed into his shirt, his body curling up into his mentor's arms as he broke down. The idea of never seeing the love of his life again was never one that he'd thought too much about, but now he was being forced to live it. And he didn't know long that he could live without her.