After discovering a mysterious mansion in an unknown forest, (Y/N) Tokito entered only to be knocked out in her steps. The feeling of emptiness and large masses of mist surrounded her just before waking up to a new time... . . . Warning! This is my first reader story, so please excuse or tell me of any mistakes I might make. I will highly appreciate any and all feed back! The cover is from pictures of the internet put together on Canva, so credits to the original artists! Demon slayer is not mine and neither is My hero academia. You are obviously you, so I don't own you either. Please enjoy! ( ^ω^ )

Centuries ago, during the age of the first Breath User, a prodigy was born - Reiketsu Koori (冷血 氷), a name that meant "cold as ice." A swordsman of unmatched talent, Reiketsu was one of the few to walk beside legends, his strength rivaling even that of Yoriichi Tsugikuni. Master of the lost Breath of Ice, his blade froze the air itself, and demons shattered beneath its chill. But fate is cruel. Betrayed and transformed into the very thing he once hunted, Reiketsu vanished from history - presumed lost to Muzan Kibutsuji's will. Yet within the frozen abyss of his soul, Reiketsu's humanity never died. Now, centuries later, whispers of a demon who hunts his own kind spread across Japan. A demon with a katana of frost... and eyes full of sorrow. But in a world of fleeting moments and endless battles, he crosses paths with a gentle soul - Kanae Kocho. Her kindness, so warm and fleeting, begins to melt the ice around his heart. Will Reiketsu's redemption melt the frost within, or will he remain frozen in time - a relic of a forgotten era?

A new born baby girl named Y/n Tsugikuni gains a unique birth mark on her forehead shaping a stylised sun when she was born. She is the descendent of the most powerful swordsman in the history of demon slaying... Yoriichi Tsugikuni Y/n Tsugikuni has a mission to protect the Marechi in a school called UA and put an end to the Upper Moon Three demon named Akaza. Will the Sun Hashira Y/n Tsugikuni succeeded in her mission? Will war break out between the demon slayers and demons? Read to find ░▒▓█►─══─◄█▓▒░ "ʏᴏᴜ ɢᴜʏꜱ ᴄᴀʟʟ ʏᴏᴜʀꜱᴇʟᴠᴇꜱ ʜᴇʀᴏ'ꜱ ᴡʜɪʟᴇ ᴡᴇ ᴅᴇᴍᴏɴ ꜱʟᴀʏᴇʀꜱ ᴅᴏ ᴀʟʟ ᴛʜᴇ ᴡᴏʀᴋ? ʏ'ᴀʟʟ ʜᴇʀᴏꜱ ᴀʀᴇ ᴊᴜꜱᴛ ᴀ ʙᴜɴᴄʜ ᴏꜰ ʙᴜʟʟꜱʜɪᴛꜱ" ░▒▓█►─══─◄█▓▒░ Disclaimer: I do NOT own Demon Slayer or My Hero Academia. Credits of the pictures and the original story line will go to the original owners. I have changed the storyline in my way so please DO NOT copy it or there will be consequences.

"We are all like fireworks...we climb, we shine and always go our separate ways and become further apart. But even when that time comes, let's not disappear like a firework and continue to shine forever." - (Y/N) Hitsugaya You've never cared for the noise of the Corps. The greetings, the chatter, the way meetings seem to stretch on for no reason. You sit at the far end of the table, arms folded, letting the others talk until something worth your time comes up. You are the Frost Hashira, one of the youngest to ever hold the title, and you didn't get here by wasting words. Mitsuri still smiles at you the same way she did the day she found you - half-frozen, blade in hand, too stubborn to die. She claims you had "a glint in your eyes that wouldn't melt," whatever that means. You let her talk. You've long since learned that trying to stop her is impossible. The others call you cold. They're not wrong. You've seen too much, too fast, and it's easier this way - safer to keep the world at arm's length than let it in and risk watching it shatter. The Corps needs people like that. People who don't hesitate, who don't let sentiment dull the edge of their blade. Your role isn't to smile. Your role is to end fights before they begin, to cut down demons before they can take another life.

Their savior - Demon Slayer x The Promised Neverland x My Hero Academia x Tokito reader Started: Begin May 2021 Ended: Begin July 2021 Her life was never easy. First having her mother dying from an illness, then having her father dying after trying to collect herbs to cure her mother's illness, and lastly having her brother sacrificing himself to keep her alive. Her only family that is left, was Muichiro. Her older brother that tried his best to protect his little sister and whose hatred for demons grew stronger every day. Although, she still felt empty inside... After the disappearance of Muzan, the demons became much less... But of course, there is a cause for every event. One day when Y/n travels through the forest with her crow Kumo, she discovers a hidden area with demons, a lot of demons. She saves a girl and finds a reason behind all the kidnapped children and the disappearance of the Demon king. Will she be able to achieve her goal? To save all the children from the farms? "𝘍𝘳𝘰𝘮 𝘯𝘰𝘸 𝘰𝘯, 𝘮𝘺 𝘨𝘰𝘢𝘭 𝘪𝘴 𝘵𝘰 𝘴𝘢𝘷𝘦 𝘦𝘷𝘦𝘳𝘺 𝘤𝘩𝘪𝘭𝘥 𝘧𝘳𝘰𝘮 𝘵𝘩𝘦 𝘧𝘢𝘳𝘮𝘴." - Y/n Tokito Disclaimer/Trigger warnings: - I don't want anyone to publish my book on any website or app without my permission - I don't own Demon Slayer, The Promised Neverland or My Hero Academia - Demon Slayer is originally made by Koyoharu Gotouge -The Promised Neverland is originally made by Kaiu Shirai - My Hero Academia is originally made by Kohei Horikoshi - Trigger warnings: Blood, maybe deaths, killing, suicidal Ray, trauma? & language

If you wanna understand this more, please read the first one "Priceless Smile". May you all enjoy reading! I apologize again in advance for the misspelled words and wrong grammars. ¤The original Kimetsu no Yaiba/ Demon Slayer, its plot, and its characters belong to its rightful owner Koyoharu Gotouge. Only my original characters and some of the plot which is not a part of the original work belongs to me. - this may have very slow updates unlike the first one, I'm sorry!

A Pillar who's even calmer than any of them, with a smile always on this Pillar's face. . . . 'A priceless smile' the other Pillars thought. . . . . >How would this Pillar handle this high position at a very young age? >Is it worth it to become a Pillar or no? . . . . . . . . . . (I'm really sorry everyone, this is my very first fanfic.)

-------------------------------------- 𝐾𝑎𝑚𝑎𝑑𝑜 𝑆𝑎𝑠ℎ𝑖𝑟𝑒, 𝑎 𝑠𝑖𝑐𝑘𝑙𝑦 9-𝑦𝑒𝑎𝑟-𝑜𝑙𝑑 𝑤ℎ𝑜 𝑐𝑎𝑢𝑔ℎ𝑡 𝑜𝑛 𝑎𝑛 𝑢𝑛𝑘𝑛𝑜𝑤𝑛 𝑑𝑖𝑠𝑒𝑎𝑠𝑒, 𝑚𝑒𝑡 𝑡ℎ𝑒 𝑑𝑒𝑚𝑜𝑛 𝑘𝑖𝑛𝑔 𝑎𝑛𝑑 𝑖𝑛 𝑜𝑟𝑑𝑒𝑟 𝑡𝑜 𝑠𝑎𝑣𝑒 ℎ𝑒𝑟 𝑓𝑎𝑚𝑖𝑙𝑦, 𝑠ℎ𝑒 𝑠𝑖𝑚𝑝𝑙𝑦 𝑚𝑎𝑑𝑒 𝑎 𝑏𝑎𝑟𝑔𝑎𝑖𝑛. ❝𝘒𝘪𝘣𝘶𝘵𝘴𝘶𝘫𝘪-𝘴𝘢𝘯! 𝘠𝘢𝘮𝘦𝘵𝘦 𝘬𝘶𝘥𝘢𝘴𝘢𝘪! 𝘖𝘯𝘦𝘨𝘢𝘪!❞ ❝𝘞𝘩𝘢𝘵 𝘸𝘪𝘭𝘭 𝘐 𝘨𝘢𝘪𝘯 𝘧𝘳𝘰𝘮 𝘵𝘩𝘪𝘴 𝘪𝘧 𝘐 𝘴𝘵𝘰𝘱 𝘯𝘰𝘸?❞ ❝𝘐- 𝘐 𝘸𝘪𝘭𝘭 𝘥𝘰 𝘢𝘯𝘺𝘵𝘩𝘪𝘯𝘨 𝘺𝘰𝘶 𝘸𝘢𝘯𝘵.❞ --------------------------------------

It all began when Y/N kocho died in her world and suddenly awoken to a different world... I don't own Attack On Titan nor Kny ( ON HOLD)