When Yandere!Rengoku Kyojuro Becomes Obsessed with a Sweet!Oblivious!F!Tsuguko!Reader:
#Tags: Obsessiveness, possessiveness, implied nsfw, innuendo, minor cursing, implied killing, implied stalking, you're his extremely oblivious tsuguko, jealousy
Haori divider by @uzmacchiato !
Demon Slayer:
Kyojuro had always been a straightforward man. You want to be trained by him? Just ask him. You wish to accompany him on his mission? Just ask him. It was the same for him. He wants to go on a certain mission? He'll ask to be deployed! However... was it so strange for him to stumble over his words in your presence? Maybe.
You, his ever diligent and enthusiastic tsuguko. The way you handle yourself with grace, your haori smoothened and steamed to the crisp, your perfectly fitting zori, your appropriately short skirt, your tight demon slayer uniform, and that soft, long hair of yours you like to keep in a braid. Kyojuro never expected to feel this sense of whiplash-inducing awe towards any of his tsugukos. Except you.
During training sessions, the flame pillar found his attention drifting towards you. You're thinking, isn't it normal for a mentor to pay attention to his student? Well... The intense manner he checks you out in isn't normal. Head to toe, lingering on the delicious curves contained by your sinful uniform, repeat. It has become a routine for him. A routine he's not very proud to admit or maybe he is.
You're so sweet to him! You bring your homemade lunch to training sessions with him everyday, share the delicious mochi and tempura with him. After all, your mentor is such an amazing man. You greatly admire his spirit and strength!
Yet, would you still think the same if you found out the dangerous thoughts crossing his mind each time his flaming eyes landed on you? Thoughts a man of his league should never be having. He has learnt to single you out in a crowd of people faster than demon slayers can recognize a demon. He has memorized every speck of glitter in your eyes. Your height? Down to exact centimeters. Your age? You turn 19 in two months. Call him obsessed or not, it's his duty to focus on every detail about you even the strands of your hair?.
The way you handle your flame breathing technique is truly mesmerizing to watch. His efforts have been clearly visible in your moves! Yet, your style has a little tweak of your own too. The fire is white! Hotter than normal flame. And it looks absolutely ethereal when you use it to slash imaginary demons during training. Like a halo surrounding your already beautiful form. Kyojuro's so proud of you. Enough to feel the need to grab you and throw you onto his futon to show you just how proud he is of how good you've turned out.
After every training session, as you clean up, you open your hair to retie the braid which messes up during physical combat training. As you did it this time, you kept the red ribbon you use to tie your hair beside your thighs, not noticing when Kyojuro smoothly slid beside you, his hand quickly tucking the ribbon away into his pockets as he pretended to clean up. Yet, his white pupils were fixed on you.
"Here, take this," he warmly smiled, his calloused hands placing a ribbon in the print of his own haori onto your lap, "it's a token of my appreciation for you. Now, you truly are my tsuguko!" Oh, how could he resist the oblivious, torturously sweet smile you flashed at him, innocently accepting the ribbon to wear it in your hair with giddiness? Fuck it all. He wants to kiss you.
You never noticed that Kyojuro's sword handle was now wrapped with an oddly familiar red ribbon.
Lately, you've been hanging out with Tengen Uzui a lot! He's such a powerful and tactical hashira. You always miss the way Kyojuro warmly smiles at the sight of you two together, yet it never reaches his eyes. He can't say he likes it. Oh, how strange it is that the murderous intent he feels for Uzui is even more than the one he feels towards demons who knows? Maybe he has killed people for you already. The moment you return from Uzui's flash mentorship, you notice Kyojuro's protective stance over you.
"Y/n. You know something? There's a tradition I do for all my tsugukos. They must wear a version of my haori while under my training. Understood?" The odd manipulation was masked with saccharine sweetness as he placed an arm around your shoulders, pulling you closer to his side, "Understood?"
"All right! I'll be honoured to wear your haori!" You smiled brightly at him. Then, as you slipped the already prepared by him haori onto your frame, you beamed. It was so pretty! You were so proud to be his tsuguko.
You didn't realize that Mitsuri never wore his haori while training as his tsuguko, you're special.
Thank you so much for reading! I hope you enjoyed this little headcanon. Kyojuro sends some tempura to you 🍤 Do send requests for more! 🧡











