𝓦𝓱𝓸 𝓲𝓼 𝓼𝓱𝓮 𝓻𝓮𝓪𝓵𝓵𝔂? (Creepypasta x demon slayer reader)

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No one pov: "Well what happened to you?" Sally asked you "what do you mean Sally?" "What happens when you kill muzan?" Sally said "oh!well three things can happen to us one we can survive the battle but have a demon slayer mark and die at the age 25, two we can die,or three if we are lucky we can live during the Final battle." You said "so how old are you y/n?" "22" you said playing with Sally's hair "why does a demon slayer mark make you die at 25?" She asked "i..I don't know really Sally it just does" you responded "so how do you know y/n?" "Old old friend had it" I said brushing her hair as night comes sooner and sooner I teach Sally more of my skills "you know Sally you are a fast learner "I said "really?thanks!" She said happily "ready to kill demons?" "Yessss!" I giggled at her response she is a good kid she probably make it to the final selection If she was human poor kid didn't deserve death but her uncle did deserve death

*timeskip to morning*

"I'm so tried y/n" Sally said rubbing her eye "me too kid we can go back home now" I told her picking her up and walking back to my home 'slenderman would know where to find her' I thought as I looked down at Sally asleep already just then I heard a snap I look back and saw toby "toby? What are you doing here?" I asked "oh *whistles* hi y/n *click tounge* slender sent me to get s-*shit* "to get Sally?" I asked giggling a bit at toby's ticcs he nodded in embarrassment "hey no need to be embarrassed I think your ticcs are cute!" I said he had a slightly blush on his cheeks but hey there where cute "here you go" I said handed Sally to toby and they left as I went home