A Hiro x Reader requested by brozipan55.
(Unedited).
"Krei's the man behind the mask," Hiro says in disbelief. You shake your head at him.
"Why?" you ask. You and your friends had all been trying to catch the man in the mask. It was Fred's idea that the man was actually Krei, but you weren't sure if that was right.
"He's using my microbots to get his machine back," he continues.
You let out a deep breath. "Okay, well-"
"Oh no," Baymax says. Everyone turns just in time to see the chunk of debris flying towards you. Baymax turns and shields everyone with his huge body. Hiro's arm goes around your shoulders as he drops to the ground with you.
He looks up at you. "Are you okay?" You nod and adjust your helmet. "Good. Baymax, get us out of here." Baymax uses his rocket fist to pound his way out of the debris. Everyone climbs out of it and glares at Yokai. "Everyone get the transmitter behind the mask! Go!" Baymax steps up, only to have another chunk of debris thrown at his chest. "Baymax!" Hiro leaves your side and sprints to him.
"What's the plan?" Wasabi asks you.
Go Go grasps her disks tightly. "Get the mask," she says.
"O-Okay. . . but seriously, what's the plan?"
"Get the mask and try not to get killed," you say simply, bouncing up. Your suit allowed you to take large, bounding steps and leaps, much like Fred's suit. You jump towards Yokai, only to get knocked over by a wave of microbots. This distracts him, which allows Go Go to roll forward. You stand up and dodge wave after wave of microbots.
"Baymax, come on!" You hear Hiro shout. You turn and see Hiro tugging on a piece of concrete that holds Baymax hostage. You gasp when you see the group of microbots creeping up to him. "Hiro!" you exclaim, bounding towards him in three quick strides. You jump out in front of him just as the wave of microbots hit you in the chest. A flash of pain erupts inside of you as you're flown sideways. Your head hits the ground hard and everything goes black.
"___!" Hiro shouts in fear. He looks at Baymax. "Come on, buddy. Help me out here! ___ needs us!" He realizes that he won't be getting Baymax out of this anytime soon. "Wasabi! Go help ___. Honey, Fred, Go Go, distract him!" He pushes the concrete with all of his strength, but it doesn't budge. He closes his eyes when he thinks I'm the pain you're probably going through.
"Hiro, she's losing a lot of blood," Wasabi informs him. "She's unconscious. . . I can't do anything!"
Hiro opens his eyes as the anger fills him. With a quick push, the concrete moves. Baymax stands up. "Come on!" He runs to your side, where you're laying in a small pool of blood. "Scan her!"
"She is experiencing blood loss. She also has two broken ribs. If she does not receive care soon, it could result in serious damage or even death."
Death. "No!" Hiro shouts. "No, I can't lose her!" He
Unaware that your eyes were even closed, you whimper. "It hurts."
"Hiro!" Honey Lemon shouts. Hiro turns his head and sees all of his friends, completely useless against the microbots.
Hiro's face hardens at Yokai. He gently lays you back down and climbs up on Baymax's back. "Full thrust!" He orders. Baymax shoots forward and hits Yokai. Once Yokai is down, Hiro grabs the mask. "It's over, Krei." Yokai slowly gets back onto his feet. Hiro gasps when he sees his face. "Professor Callaghan? But. . . you died."
"No. I had your microbots to protect me," he says coldly.
"But Tadashi. You just let him die."
"Give me the mask, Hiro-"
"He went in there to save you!"
"That was his mistake!" Callaghan replies.
Hiro's eyes narrow. "Baymax," he says, "destroy."
"My programming prevents me from harming a human being," Baymax states.
Hiro shakes his head and hits his fist against Baymax's access port. "Not anymore." He takes out Tadashi's healthcare chip and tosses it behind him. "You let my brother die and you hurt ___. Do it, Baymax! Destroy him!" Baymax raises his fist and aims it at Callaghan.
"Hiro, no!"
"Wait, Baymax! Stop!"
Hiro ignores all of these cries from his friends and focuses only on Baymax. His heart hardens as he knows that Callaghan carelessly got Tadashi killed and didn't even flinch when you lay there in a pool of blood. Only one stops him. "Guys, stop! Let Baymax do it!"
"Hiro," your voice croaks weakly. He slowly turns and sees you, leaning against the wall. Wasabi's headband is wrapped tightly around your head.
"___," he says, the relief that you're okay flooding him. He goes over to you. "A-Are you okay? I was so worried, I-I-"
"You have to stop him," you say in a panicked voice. "You can't let him do this. This isn't what Tadashi would want."
"Tadashi isn't-"
"It isn't what I want," you finish. Hiro stops. "Go. You have to stop him. Now! Before anyone else gets hurt."
Hiro turns his head and sees the robot backing Callaghan up into the corner. He eyes the healthcare chip and quickly snatches it. "Honey Lemon!" He shouts. She turns and weakly smiles when he tosses it to her. Hiro turns back, expecting to see a smile on your face. Instead, your eyes are closed. "___!" He lifts you gently into his arms and wipes the blood from your forehead. "___, no! Don't leave! Please be okay!"
"Hiro!" Go Go shouts. "Fred has Callaghan. We need to turn him in and take ___ to the hospital."
Hiro nods. "Okay." Just before Baymax leans down to scoop you up into his arms, Hiro cups your cheeks in his hands. "I'm going to make things right. Hang in there." He kisses your forehead lightly. "I love you."
Later that night, you slowly open up your eyes. You feel heavy with sleep as you focus on your surroundings. The white lights on the ceiling make your eyes water. You groan and try to sit up a little, only to feel a sharp pain. "Ow!"
"Whoa, whoa," a familiar voice says. You look up and see Hiro's big brown eyes. "Relax, you're okay." He gently pushes you back down on your pillows. "It's good to see your eyes open."
Everything floods back. "Callaghan. Is he. . . he's. . ."
"He's alive," he says. "He's in custody. I. . . I'm sorry. I really messed up. I was just so mad! He almost killed you, he killed my brother, and he doesn't even feel anything about it!"
You reach for his hand. He smiles and places his on yours. "You didn't mess up. Everything's okay now. I, uh, heard what you said."
Hiro's eyebrows pull together. "What'd I say?"
"That you loved me," you whisper.
Hiro's face turns red in embarrassment. "Yeah," he says. "I just. . . I didn't know until I almost lost you forever. I need you more than anything right now, ___. I love you."
You tug on his hand lightly. He stands up out of his chair and slowly slides next to you on the bed. "I love you, too," you say. He gently cups your face. You grab the front of his hoodie and pull his face down to meet yours.

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Big Hero 6 x Reader One Shots (2)
FanfictionPart two of my series of Big Hero 6 one shots! Ever dreamed of adventures with Hiro? Inventing with Tadashi? Comic books with Fred? Selfies with Honey Lemon? You can find all of this and more in my one shots! If you haven't read part one, I suggest...