I started this forever ago and it was a whole thing and the date part was in it and the other parts were all in it and then months went by and I wrote this in an hour and I'm so dead inside
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If Mecha Naruto hadn't been holding on, Hinata would be dead, but his hands were still clamped down on her waist and he was guiding her body. As he got faster she fought to match his rhythm with her mouth, but the adrenaline and the voice at the back of her head that was still warning her about whiplash meant that every breath was a struggle. Every time she closed her lips she gasped a second later, until—there it was again; she clung with her mouth and panted through the corners, screwing up her face, concentrating as hard as she could on keeping it. And then Naruto thrust into her mouth and she lost it. She dug her nails into his legs with a breathless shout, but Mecha Naruto's rhythm didn't let up for a second. Hinata gasped once, loudly, and on his next downstroke suctioned firmly onto Naruto's cock. She dimly heard his fingers grasping for a better purchase on Mecha Naruto's metal shoulders, felt him tense. But it was getting harder to notice those things. She barely breathed as she struggled to keep her tongue working, and the heat and pressure from Mecha Naruto behind her was starting to drown her thoughts in a white haze.
She could hear Naruto's loud voice from somewhere far above her, and her own muffled panting, and without warning he thrust again, three times, an uneven staccato, and then his legs went limp under her fingers as her mouth overflowed. She tried to swallow, but lost track of herself and breathed in, and violently spat out the remnants, choking. Naruto stumbled backwards and out of her sight. Her sight was next to gone—she inhaled sharply past the pain in her throat and threw her head back, her tear-smudged vision turning the room mosaic. Still she couldn't make a sound; instead she grasped Mecha Naruto's forearms tightly.
Then he was lifting her up, away from him, and she panicked for an instant before he lowered her again, somehow, her nipples pressing against his chest. It was hot-! His entire body was hot, and now that she was facing him she could feel her inner thighs scalding. She wrapped her arms around him as tightly as she could, smashing her face into his neck, but she jerked it away again with a squeal when something at his base started to vibrate and her back arched and the squeal leveled out into a breathless scream that broke and broke with every thrust. And as she struggled to squirm and press her clit against that spot, his thrusts slowed and Hinata's screams peaked, and black oil gushed from between her thighs as she convulsed in Mecha Naruto's grasp.
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As she struggled to open her eyes, Hinata's thoughts swam. Naruto, slumped backwards against a couch, eyes glazed and abdomen shining. Oil streaking her legs and feet, pooling on the floor. Vertigo. Hot water, cold water, pain; the sound of machinery whirring as she sank through the bottom of something soft—and then she was…
Her eyes snapped open. But then the objects around her solidified and she felt metal under her arm, and her panic melted away. The second she woke, Mecha Naruto was speaking: "YOUR BURNS HAVE BEEN ATTENDED TO. I HAVE STUDIED HUMAN WOUND DRESSINGS. THE DWELLING HAS BEEN CLEANED. FLESH-NARUTO HAS BEEN CLEANED. ALL CLOTHING ARTICLES ARE ACCOUNTED FOR. SIX HOURS, FIFTY-FOUR MINUTES AND SIXTEEN SECONDS REMAIN BEFORE YOU ARE REQUIRED…" Too tired to stop him, she let herself sink back into darkness, his voice lowering gently her back into sleep.