Hello! Can I request for Shinobu healing her injured s/o and deciding to teach him basic medicine fluff? Then maybe how it played an important role during their final battle with Doma? Thank you!
Hello!! Definitely!! I’m so sorry I got to this so late, but this prompt was so wonderful and I kinda took it and ran. It turned out to be really long, sorry again, but I hope you’ll like it!! I’ve never really written something this long before, but I hope I did it justice! Thank you for your patience !!!
Shinobu Healing Her Injured s/o and Teaching Them Basic Medicine (Plus Their Role in the Final Battle with Doma)
You get hurt more than you’d like to admit as a Demon Slayer and you find yourself in Shinobu’s hands more than once. During the time that you’ve spent with Shinobu, you find yourself learning more and more about her. Her interests, friends, family, history, dreams, sadness, and hardships. You’ve also learned to love her more than anything. When you returned yet again with more wounds than she could count she had enough. She tells you that she can’t always be the one to take care of you and that you must learn to be more self-aware. You’re saddened at the mere thought of her not being with you because the chance of that becoming a reality is very likely. She notices your distraught features and lifts your head up with her hand and kisses you softly.“I promise that I will be by your side for as long as I can,” she whispers to you. Your mind still in a haze from her kiss you nod your head with a goofy grin taking over your lips. Her face takes a more determined look as she tells you, “I’m going to teach you everything I know and more so be prepared.” You look at her with confusion written all over your face as she just smiles at you. Unease begins to take over your stomach due to the number of times she's given someone else that smile and then that person is dead in the next few seconds. Over the course of the next few years, you have trained under her in pharmaceuticals and a variety of healing methods. It was grueling work and you almost gave up quite a few times, but Shinobu kept you going. She would reward you with kisses every time you dispensed the correct antidote for a specific situation she had given you. When she returned from missions all banged up you would be the one to heal her for a change and you enjoyed being on the other side of the bandages for once. She would often hold your hand when you went shopping for more herbs and would smile as you pondered to yourself the healing properties of each medication, she knew you would be fine without her. She looked up towards the sky with a more somber expression and wondered how long it might be until she has to leave you. Sighing, she shook her head and turned to you seeing you walking over to her asking for advice on which herbs to buy. “You still need help with choosing which ones to buy after all this time?” she mused as a smug smile graced her face. You inevitably become flustered by her comment and start to stammer a snarky remark back to her, but before you can she breaks into a fit of giggles at your antics further embarrassing you more. You turn your nose at her and start walking back to the estate without her as she catches up to you she starts to apologize, though the effort was halfhearted. You both make it back to the estate smiles ever-present.
A few months pass and you and Shinobu were sent out for separate missions you said your goodbyes to each other and kissed before you two would be taken away to finish your jobs ,but a message that sent chills down both of your spines rang out before you two had the chance to take even a step away from each other. “EMERGENCY SUMMON! EMERGENCY SUMMON! ATTACK ON UBUYASHIKI ESTATE! ATTACK ON UBUYASHIKI ESTATE!” AN explosion went off where the Ubuyashiki Estate was and you both took off as panic filled your systems. When you arrive on the scene of the explosion, you find Himejima and a woman with her hand stuck in a demon who was regenerating at an extremely fast pace, the other demon slayers and pillars had also arrived. Himejima then screamed out the identity of the man, bloodlust filled the air and thickened it to where a normal person could no longer breathe, the demon slayers, however, found this to be the moment they breached water after drowning for an eternity. Attacks from all sides began to close in and just as you all were about to strike Muzan’s body, walls appeared to shield him and the woman. You and Shinobu were separated. As you analyze your surroundings you realize that it was an eternal maze that was filled to the brim with demons. Only one thought was on your mind, Shinobu’s safety. You ran through every room in the maze and finally reached a room where Shinobu stood. However, she quickly fell to the floor as blood was splattered all around her. “SHINOBU!” You yelled from the top of your lungs and began to run to grab her and take her away. Your body was hit with shards of ice that were scattered throughout the air, but it only fueled you more to get Shinobu out of here knowing it was hurting her far more. You grab her shoulders and turn her over to look at her and assess the damage done. Cuts to her collar bone and gashes to her ribs were evident those could be fixed, but the puncture wound to her lung could be detrimental to her. She was still breathing and you could still feel her pulse, she was still fighting even now. Her eyes are open and she looks at you bringing her hand up to touch your face. Her eyes wet with tears you can hear a gurgling in her lungs as she tries to speak, blood slowly leaking out of the corners of her mouth, but that ever-present smile still lingering on her face. You pick her up. “Shinobu can you stand?” She nods her head and takes a stance, although she isn’t facing in the direction from which you came but in the exact opposite. There stood a man with rainbow eyes and platinum gray hair, wearing red and white as well as holding what seems to be metal fans. You instantly knew from the description Shinobu had given you many moons ago, this was Douma. In the place of your heart, an overwhelming cauldron bubbling with anger makes itself known as its contents seep into your veins and you feel yourself come to a boiling point. You look to Shinobu as the same face of unadulterated hate finds its way to her face as well. “Well looks like another delicious meal has come walking through my doors but you don’t seem as strong as her. I pity you poor humans and your stupidity. I suppose I’ll give you and this weak girl another chance go ahead, I welcome you to try!” The demon says encouragingly as he puts his arms out as if you two were about to embrace him. You face only twists in anger further as you scream with Shinobu, “GO TO HELL YOU BASTARD!”
Both of you slice at Douma as many times as possible poison dripping from both of your swords. Though Douma gets clean hits to your left knee and both your arms. Your breathing becomes ragged as the frost in the air rips your lungs. You look at Shinobu knowing she only has so much energy left before her body begins to shut down. You give her a signal with your hands indicating your plans and her nodding along. Both of you breaking the ground as you run, you slice at the demon’s stomach horizontally and Shinobu stabs through the demon’s esophagus, you take multiple vials of highly concentrated wisteria blossom poison and crush them as you shove them down the gaping holes Shinobu and you have created. One of your hands now bleeding with glass fragmented everywhere and one covered in stomach acid leftover from the demons internal organs. You can hear the sizzling of the demon's body as he shrieks out in pain. You take the other vials and crush them over his head scaring his face in the process. He writhes on the ground in pain as the poison eats through his body each one having a different and more complex composition than the last. Shinobu smiles and watches the demon die at her feet, she then collapses as well, but before she hits the ground you catch her. Her condition is much worse now due to the amount of blood she’s lost and the puncture wound to her chest cavity only sucking in more excess air. She most likely has a collapsed lung now. Kanao bursts through the door seeing Shinobu in your arms and you struggling to hold her with your wounded hands. Kanao then helps you carry Shinobu most of the way fighting many of the demons that lay in your path. You somehow make it out with her help. You look at Shinobu again and hold on tighter to her as you begin to run as fast as you can, as far as your legs will take you and then farther because you know you only have seconds to spare. You make it to the Butterfly Estate just barely before almost collapsing at the doorway. The Kakushi and Aoi help you two through the doors and move Shinobu. You feel a second rush of adrenaline rush through you realize your the only one prepared enough to do surgery on Shinobu as you start yelling orders about the things you need. You get the equipment set up and Aoi is by your side as well as several Kakushi. Them bandaging your injuries up as you start to work on Shinobu. You work fast and hard to make sure you do everything you can to save her, but doubt plagues your mind at every turn. The only thing that keeps you from passing out completely is the thought that Shinobu won’t be there the next time you wake up. You’re glad you spent all those hours on your own, aside from Shinobu’s teaching, learning everything you can and preparing for every possible situation that could happen because you know Shinobu would do the same for you because it helped immensely in this moment. You finish doing what you can to stabilize her and promptly collapse as you finish having only her on your mind you give her one last look before your consciousness lets go.
Months have passed as you open your eyes again feeling the sunlight hit your skin. Your eyes open and you feel another presence beside you holding your hand. Another bed is next to yours, you glace over as much as you could see a bandaged, breathing, living Shinobu. You begin to cry thanking every power known to man that your surgery worked and she’s alive. Your small hiccups and sobs wake her up and as she opens her eyes slowly and sees your tears she begins to smile once more, “What are you crying for you crybaby? I’m alive aren’t I?” More tears spring from your eyes and you begin to sob, moving as much as your body would let you get close to her and enveloping her in your arms overjoyed at the thought of her being at your side once more. She moves her head to lie on your shoulder and wraps her arms around you. You begin to choke through your sobs and fatigue, “You i-idiot! What w-were….. you th-thinking? The o-only place…. you'll d-die is…. b-by my side..., old, and-d... happy with e-everyone…. you l-love around you!” Her eyes water once more as you tell her this reminding her of someone who told her something similar and you both continue to sob into each other's arms, safe at last.
