Kids

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Summary: (demon slay todo) Secret siblings/twins AU. Yuki and Giyuu got turned into kids and Aizawa found them and 1-A had to take care of them. 

No one's POV

"Class take care of these kids I found on the streets" Aizawa said and a girl in a Hakama and a boy in a Hakama walked in and the girl was holding onto something in a piece of cloth and it had a red ribbon tied on the top and the girl was in front of the boy being protective and Aizawa left "Y-Yuki where are we?" The boy asked "I don't know Giyuu but keep your guard up we don't know if they are like... them" Yuki said "aww, they look adorable!!! What's your names?" Uraraka asked "Yuki" Yuki said "G-Giyuu" Giyuu said as he was scared "wow the boy is more of a coward then the girl hey how old are you two?" Bakugou asked "I'm 8, Giyuu's 13" Yuki said "wow he is older but more scared then the girl" Denki said "Y-Yuki don't lose control please we don't want another incident like the last time remember?" Giyuu asked and Yuki snapped out of thought "sorry... I'm tired of this when will we find a place to stay now... where will we go?" Yuki asked "well for now you can stay here at U.A until we find you guys a home to live" Izuku said "fine we will stay here for a while" Yuki said "...is there food?" Giyuu asked "yes! Bakugou can you make some food for these kids?" Iida asked "HAH?! WHY ME?!" Bakugou yelled "your the only one who can cook good food" Sero said "ugh fine" Bakugou said as he went to the kitchen and started to make some soba for the two kids "are they going to kill us if we earn their trust?" Giyuu asked "I don't know I hope they don't kill us" Yuki said "oi kids your lunch is ready" Bakugou said "okay... eat with caution they might have poisoned it" Yuki said and the two slowly went to the table Yuki examined the food carefully and she confirmed with Giyuu it is not poisoned so they slowly ate the food with lots of caution. "Where is Todoroki-kun?" Izuku asked and Yuki almost choked and Giyuu looked shocked "isn't Todoroki your last name?" Giyuu whispered to Yuki "yeah... I don't know who they are talking about though also these people looks weird" Yuki said as the two finished their food "you kids are done already? Good now go play in the common room now" Iida said as he took the bowls and the two kids went in the common room and Yuki went straight to a chapter book and Giyuu was looking out the window and daydreaming the times when Tsutako, Sakura, and Kori are still alive "wow they are very quiet and they look and act more mature then us" Kirishima said "well lets have fun with then for now" Denki said as the Bakusquad went over to them but Bakugou "hey kids, wanna try dancing with us?" Mina asked "no thanks... that sounds a little boring" Yuki said as Mina was shocked "wow Mina your requested got turned down fast" Sero said "did someone say something?" Giyuu asked as he yawned "nothing Giyuu I'm tired we were walking for 6 hours straight too after... the incident" Yuki said "what incident?" Momo asked as she came down and Giyuu looked shocked along with Yuki and Giyuu ran over and hugged Momo which made everyone shocked "oh! We're sorry he has a habit of doing this to dark haired girls" Yuki said as some tears came down "nii-san" Giyuu said "this is weird" Tsuyu said "um why did he come to me? Is it because I have dark hair?" Momo asked "...his parents passed away when he was young so he only had his sister who died a while ago you just remind him of his mom and sister" Yuki said as Giyuu got off Momo and hugged Yuki "I miss nii-san and Okasan" Giyuu said (I search it up and mom in Japanese is Okasan and father in Japanese is Otosan) "I know... I miss them too, but they are watching us all the time" Yuki said. 

A few days later the two kids grew up one year so Yuki is 9 and Giyuu is 14 and the two already lost Sabito and Makomo and Yuki already became a Hashira "wow they look different" Denki said "I'm 9" Yuki said ''I'm 14" Giyuu said as the two were wearing similar uniforms but Yuki had different colors on her Haori and she wears a cloak and her hair is decorated with her sisters old hair clips and hair sticks in the half up half down bun braid thing like in my other chapters and she is more serious then usual "so we are going on a trip and we can't leave you alone so you guys will have to come with us" Iida said "alright then we shall... why do I feel like it's going to be a disaster" Yuki asked herself and everyone went on the bus and both Yuki and Giyuu hid their swords "so you've became a Hashira, lucky you defeated 50 demons and a twelve kizuki that's good for you I am only on 15 demons I hope one day I can make it to your level" Giyuu said "yeah the one thing is demons of the upper twelve kizuki are attracted to the Hashira's especially ones with Marechi you know me and my sisters have rare blood demons might come here it might be a demon who killed our sisters keep your guard up Giyuu and keep your sword hidden but at the same time be ready for a fight you may be 5 years older then me but I out rank you in the organization, maybe one day if I'm still alive and you become a Hashira you might be stronger then me I'm only a 5th strongest Hashira but I'm still weak compared to them I need to be stronger if I want to feel like I am worthy of this title but for now keep your guard up for the whole trip and act natural don't tell anyone about this and pretend this conversation never happened" Yuki said "yeah okay this is going to be a long trip" Giyuu said "okay everyone we have arrived get off the bus now and we can-" Aizaw got cut off when everyone felt and heard a loud shake to the ground and everyone went outside the bus and two demons were outside and the league was there too and both Giyuu and Yuki looked shocked when they realized it was their sisters turned into demons so 1-A went outside to activate their quirks and Izuku and Aizawa was in the back protecting Giyuu and Yuki who were in shock. Yuki and Giyuu slowly draw out their sworda "Yuki and Giyuu what are you doing?" Izuku asked and the two slowly walked to the front and the two demons started to attack the two demon slayers who blocked their attacks "Sakura and Tsutako please we don't want to fight can we just talk?" Tsutako asked "why would we talk with demon slayers?" Sakura asked "BECAUSE WE'RE YOUR YOUNGER SIBLIGNS... you both left us alone why? You both promised us along with Kori you both promised we will always be together but since Kori died you both were also supposed to be dead you even told us yourself why? WHy did you both become demons? And Kori is still the dead one?" Yuki asked "YOU GUYS ARE THEIR YOUNGER SIBLINGS?!" Shigaraki yelled and the two demons looked shocked and they regained their human memories and Yuki fell to the ground in sorrow and the two demons slowly walked over to their siblings and hugged them one last time then the sun came up and both Yuki and Giyuu went back to their original age and what they look like before getting hit by a quirk "you grown up Yuki, I'm sure Kori would be proud, and our little brother too Touya looks completely different, they might not remember us but they are in our memories good bye for real now know we both love you" Sakura said "me too GIyuu you both are Hashira's in the demon slayer corps it's nice to know you both fallowed in our footsteps good bye we hope to see you both soon" Tsutako said and the sun burned them to ash "...Saku, Kori, and Tsutako we're sorry we were so weak" Yuki said as the two demon slayers got up from the ground but they were still in tears "...what was that?" Sero asked "Shoto and Touya Todoroki... I'm your younger sister you know my name is Yuki father and mother hid my existence along with our two oldest sisters Sakura and Kori Todoroki... all you need to know is that we will see each other again soon" Yuki said as some other people appeared behind them and they were glowing white "we completed our mission now it's time to rest in peace life on earth was fun you guys can leave anything on earth now before disappearing completely" Gyomei said as everyone took off something they loved then their bodies disappeared but their clothes fell and it was organized in cases labeled with their names and faces and everyone noticed there were more cases with more names and faces that no one recognized. 

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