Demonslayer x Female Reader Oneshots

Shinobu x Reader

Thanks @Oishii_Peach for the request!
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Unease swirled in my gut threatening to bubble up in the form of my breakfast. I shouldn't be this worried over mere rumors from the other hashira but there was something about it that struck a chord within me that had me rushing in search of Shinobu. From the little bit of information I've heard, I might already be too late to stop what has been put in motion months ago. I could only hope to find some comfort in confronting her about it.

The tension in my body didn't ease even as the Butterfly Mansion came into view. My pace only quickened in panic. I couldn't even accept her logic in poisoning herself, the outcome of her plan being one I didn't want to overthink about. The only way injecting her body with wisteria poison would hurt another demon would be her death and the thought of her being devoured left me nearly devastated.

I didn't waste a moment tearing through the estate in search of the beautiful butterfly, my emotions tumbling in an unstoppable cascade. Even if I didn't want to believe that she would do such a thing, the more I thought it over, it was something she would absolutely do. She was the type to sacrifice herself in the name of a brighter future and though I'd be left behind to deal with the grief of her absence, she'd be satisfied if it meant that she had a hand in something she felt was greater than herself no matter how much it left others longing for her.

By the time I found her in her study surrounded by poisons, I began to realize that I might not be able to stop her. I didn't even have the right to make her stop what she's already been doing. The thought made me sadden further and when she turned her head to look at me with her luminous lavender eyes, I felt my heart break. It wasn't fair that she would even think of sacrificing such a beautiful, kind person.

"Y/n, are you alright? You look anxious sweetheart," Shinobu asked in concern, setting down the vial from her hands so she could cup my face. She tilted my head around to examine me, her eyebrows creased in her own worry when her stare met mine. It was almost laughable that she was looking at me like I was losing my mind when I had come here to tell her that it was her that was going crazy.

"Of course I'm anxious. How long did you think you could do this without me finding out? I mean, injecting yourself with wisteria poison? Are you insane?" I blurted out, not able to stop the emotion that trickled into my voice. I was feeling desperate to hold her but I managed to keep my hands clenched into fists by my side instead. Her fingertips retracted from my face to be pulled against her chest as she averted her gaze away from mine. She knew what she was doing was dangerous and required a sacrifice but she still didn't look apologetic, just caught off guard.

"You weren't supposed to find out because I knew how you'd react and I didn't want you to worry. It's perfectly safe for me to inject it so you don't need to think I'm doing this to hurt myself intentionally," she muttered, a frown tugging at her lips. It didn't manage to console me at all. I had to take a few moments to slow my breathing to ensure I didn't end up freaking out. It would do no good to start yelling or throwing a fit. I had to have a clear head to handle this situation even if it meant that my opinion wasn't heard. I had to at least try to talk some sense into her.

"Shinobu, even if the poison isn't toxic to you, I hate the thought of you making this kind of sacrifice to put the poison to use. I swear, I wouldn't be able to handle it if I was in that position between saving your body or letting the demon die. I couldn't do it," I choked out, pressing the palms of my hands to my eyes to stop the tears that threatened to spill. Warmth seeped into my skin as soft hands gently pulled my arms down to wrap around Shinobu's waist. I let her guide me to hold her, pushing my face against her neck to calm myself in any way I could.

"I'm not going to change what's already been done. I'm going to continue to inject the wisteria into my blood in hopes that when I die, I'll at least be able to protect you even after I'm gone," she whispered, draping her arms around my shoulders to pull me close. Her words made my tears build up past preventing, causing me to openly weep as my hands desperately pulled her to my body. I knew there was no changing her mind but I couldn't help feeling like I failed in stopping what hasn't happened yet.

"Promise me at least that you will fight till the very end, no matter how outnumbered you are or how hopeless it seems. Promise me that you won't sacrifice yourself, that you'll use your dying breath to get away," I mumbled out raspily. She pressed a kiss to the side of my face reassuringly, leaving behind a subtle warmth that spread across my face and throughout my body comfortably. Sighing, I let myself relax in her arms now exhausted from worrying so much about her all the time.

"I promise y/n."