alpha shoto todoroki x omega reader twin sister of momo yaoyorozu 

alpha/omega Au

Genre smut

In a world where there is alphas, omegas and betas there was you a omega and this is your story on how you meet your alpha shoto todoroki at the very beginning you went to Corusan middle school the same middle school as shoto todoroki

though you didn't know it at first that was the one but when you, your twin sister momo and shoto todoroki all got accepted into UA high school based on recommendations you meet and became friends with others in class some of your classmates were alphas, and omega like yourself and your twin sister momo and then there was couple of betas in your class to.

Months later into the school year you knew two of them that were already togetherish I guess Idk I can't really tell halftime cause one doesn't always get along with his omega but anyway as you sat beside your twin sister you saw she was talking to someone else a tall boy with glass you knew him by lida you could tell that something was up you knew that ida was alpha so I guess she already found her mate you were happy for her you really were but you were sad that you haven't found your mate.

later that week you were sitting with your best friends. now most of them are already mated. the mated couples goes as followed; (momo and her alpha mate tenya). (mina and her alpha mate eijiro). (toru and her alpha mate). (kyoka with her alpha mate denki). (reiko with her alpha mate hanta). 

couples 2; (sui and her alpha mate tokoyami). (izuku with his alpha mate katsuki). all of them. but you were mated. they all snuggled up with their mates at the table in the cafeteria. there was another girl you knew.  you knew that was taken but you didn't know her name. you were close with her. 

but anyway. you saw the guy you had a crush on. just flirting her. over in the corner of the lunch room. you heard a bit of the conversation when her friends came to the rescue "hey leave her alone" girl A said ''yeah she already has a mate so leave her alone" girl B said back. 

when they left. shoto came over to your friends. he sat beside you. as they was only one spot open. tho to you. he seemed a bit ticked off that he had to sit beside you. so you got fed up and left the cafeteria. 

when you got outside you felt a hand on your shoulder "oh yeah sis" you said "are you ok y/n? You seem to be annoyed with shoto?" she asked in a worried tone ''well maybe idk, it just seems like i will never find my alpha at this point'' you said ''i mean i have known him since we were in the same middle school as him'' you added 

''it just upsets me to see him flirting around with other mated omega's not see me'' you said to her "well I'm sorry y/n we didn't know that he made you upset" she said. when you saw mina and the rest walking over to you guys.  

"wait why you guys here thought you were still talking to shoto?" you asked "well momo texted us saying you were a bit down since you still haven't a mate yet which is crazy to me cause your such nice person how could you not of gotten a mate yet" uraraka said "wait y/n your still looking for a mate right?" Katsuki asked

"yeah katsu I am what about it?" you asked him "tsk.. Dammit I know you should be with" he said everyone looked at him "wait what?" you asked with shock as you looked around the group of friends were shocked too

"well I was talking to shoto and he said that he hasn't found a mate either" he said ''what that is no the vibe i got off him, he sat beside me but... he seemed annoyed'' you said ''apparently that was not the case, he wanted to speak with you'' he said 

''wait ... what! that's impossible'' you said ''maybe he is the one'' mom said ''yeah right i don't that'' you said ''yeah maybe it's not the best to push her'' sui said ''maybe we could get him to come to her, instead of her chasing after him'' she added 

''what  are you talking about sui?'' you asked ''well i think it's just a bit cruel for y/n to go and find him, just for him to reject her as his omega'' she said  "absolutely I agree with sui with it being to cruel" mina said 

''but he could be the alpha mate your looking for'' toru said "fine fine" you said "so any one have a plan?" uraraka asked "well I have one but it's up to y/n if she wants to go with it" izuku said to the group "oh ok so what did you have in mind midoriya?" ida asked "well I think y/n could give out her omega scent as a trap to get him interested in her then if he still doesn't get it we bring him to her" izuku suggested to the group

So the idea that izuku suggested came into plan so you before leaving the yaoyorozu Manor you and walked with your sister "so are you ready y/n?" she asked "yeah I'm fine I think" you said to momo

 ''i was talking about the plan izuku came up with?" she asked laughing "oh that yeah I'm fine I just hope it works out that's all" you said to momo. anyway you got to UA. every single no mated alpha was starring at you. 

it was creepy and disgusting. you got to class with no hiccup. you sat at the back of class with momo. you waited for a while. until shoto walked in. he sat beside you. he sniffed the air and it smelt like the scent of an unclaimed omega. 

he did seem interested. the day went kind of normal. many alpha's tried to mate you but. with the help of your friends. you escaped. you got the cafeteria. when you saw shoto, denki and izuku walk. 

they came over to your table. shoto sat beside you. he sniffed your skin ''that's what was smelling so good'' he said to himself. as shoto started to nibble your ear and bite your neck leaving a hickey. 

you blushed and tried to more away from him. but nope wasn't happening. shoto placed you in between him. ''your mine now" he said as he nuzzled his face into you neck "ah hmm no" you said getting flustered "what.. Did you just say?" he asked *growling in your ear*. 

you stayed quiet for a minute. until you felt his hand sliding down south. his hand already under your skirt. touching your heat. he pushes a thumb. then a finger into your heat. you tried so hard not to moan. 

you eventually broke free from his embrace. but with a cost. he took your panties. he stuck them in his trouser pocket "Sorry guys I have to go" you said to them. you ran to the ladies bathroom to get a breather. 

you saw the marks on your neck left by him. "I can't believe he just did that in front of everyone even my friends why just why" you said to yourself. you decided to go home. you had enough with trying to get his attention. 

you got home with no attacks and went straight to your bedroom. meanwhile back in cafeteria, shoto looked sad that you left him. before he could mate you. ''hey are you ok? todoroki'' izuku asked ''yeah I think so midoriya" he said back "are you sure? cause you seem interested in y/n like a lot'' mom said. 

''well yeah i am interested. i want her to be mine'' he said ''hey, can i ask you something y/n isn't mated yet?'' he asked momo ''no she isn't'' she said ''what do you want her?'' katsuki asked in shocked that another one of izuku's ideas worked. 

''well yeah i want her so damm much'' he said ''well tenya is coming over to our house so you can i see y/n'' mom suggested. ''yeah i would love to come over'' he said. so momo texted you. 

Y/n

Hey sis
Sent by her

Oh hey momo
Sent by you

Where are you?
Sent by her

Oh I went home I wasn't up to staying sorry about the plan
Sent by you

shoto wants you. he misses you
Sent by her

well he can come back with you and tenya
Sent by you

Oh ok y/n I'll do that
Sent by her

Chat ended

After that talk with you ''ok well y/n is fine with you coming over'' she said. so later after school, momo, and her alpha tenya and shoto went back to the yaoyorozu mansion. they got inside and was at the staircase "where is y/n's room?" shoto asked ''it's the on the left" she said "ok thank you" shoto said. 

he went upstairs to the second floor. he could smell your scent. it smelt so good. he got to your door. thank the fuck god. that your bedroom door wasn't locked. cause when he opened he locked door. 

Shoto pov
After I got to the table I sniffed around to see it was y/n who was smelling of good and delicious so I sat beside her and sniffed her hair I wanted her to be mine so fucking much it was have killed me to not have her as my omega. 

So when I put in between my legs I kissed and bit her neck leaving a couple of hickeys as she struggles I stuck my hand under skirt and touched her heat. i pressed my thumb then i entered a finger into her. 

I saw she was trying to not moan out so after that happened I took her panties and stuck them in my trouser pocket. Struggles again and brakes free from me as she apologises to her friends rans out of the cafeteria. 

I got very sad when she left I was worried that might of went to rough/ hard on her but then i got really happy when momo told that y/n wants me again. I got so excited my alpha side couldn't told itself back so through the rest of the school day and after that I realised that y/n didn't bring home her school bag.

 I smiled at it and then went over to it I picked it up and brought it home with me. I saw momo and her alpha ida outside "oh did my twin sister y/n forget her school bag?" momo asked me I smile at the bag "yeah she did" I said to her.

Anyway me, momo and her alpha ida got home we got inside the big house I set down my school bag and her's I walk around the the downstairs I got to the staircase "where is y/n?" I asked momo

 "oh todoroki her bed room is the third door on the left" she said to me "ok thank you" i said to her I walked up the staircase to the second floor I could smell her strong scent. it smell so good. i just wanted her right now. 

i made it to her bedroom. i opened the door and locked it. i ran to her bed and attacked her with kisses. her scent over powered me. i loved to so much. ''so where were we? oh yeah i remember you trying so hard not to moan my name today'' i said 

she blushed as i tore her clothes off. i went back to kissing her. i started to mark her body as mine again.  Shoto moved down on your body as he pushed as thumb at your heat again for the second time. 

this time you moaned. as he shoves a finger you fast. you let out purrs and moans of pleasure he pulls out of you and move into sniff your heat and eat out your p$$$$. He moves his tongue into you licking your fold making it wet and soaking.

shoto eats your clit you moved your hands as you pulled on his multicolor hair to move him in more he instantly got the message as he moved his tongue further into you letting his nose sniff you.

Once you released your juice on him shoto drank it up he looked at you "god y/n you taste so good, i knew there was a reason i marked you'' he said. shoto pulled down his briefs letting his dick spring out and positioned himself at your entrance. 

shoto took one deep breath and pushes into you. He waited for a bit letting you kinda get use to his size inside you before he started off fast and hard you gasp at the pressure. He chuckles at your expression "do you like that my omega?" he asked you "yes nhg nya" you moaned out loud.

You moved your legs and wrapped them around his waist as he fucked you deeper you moved your arms around his neck as his pace sped up "fuck! Ngh so good" you moaned "aw you like roughness huh?" he asked you but all you could do was nod in that moment of pleasure "say my name omega" he ordered you "nhg ah alpha" you moaned "that's right" he said into your ear as he fucks even faster and harder.

He continues to fuck you deeper "mmm Ngh ah a alpha" you moan loudly he smirks "hey omega who's your alpha?" he asked you "ah Ngh fuck! you are my alpha" you moaned loudly to him "fuck your mine you got that omega now your breed my pups" he said to you as he continues to fuck you faster and harder as he felt himself releasing soon he felt his thrusts getting sloppier. He released his seed into you he pulled out of you and collapsed beside you he pulls you into him as you rest your head on his shoulder as he kissed your forehead as you could feel a knot. 

"I'm sorry y/n" he said to you as he let go of your shoulder you turned to look at him you gave him a look "why are you apologizing shoto?" you asked him.

"well I was to blind to see you were my omega in first place" he said to you "and your apologizing for that really" you said to him. "yeah I know that's a stupid reason to be apologizing to you" he said

"look you got me right shoto so what's the problem then" you said to him with a smile "yeah I know that but still" he said to you. "oh you mean how you would flirt with the girls before you claimed me oh yeah I hated you for that but it's over right? Your my alpha right?" you asked him as you looked over at him. 

You see shoto gave a laugh and then said this "yes it's over your my omega and I'm your alpha" he said to you as he looks over at you. (*behind the scenes - after you and shoto had mated. your twin sister momo called up izuku and the others telling them that you and shoto got together "wait what y/n and shoto are mated now wow" kaminari said out of shock

 "well it was midoriya's idea in the first place" ida said joining in on the call with momo "wait what that was midoriya's idea?" kirishima asked on the call "yeah that's my nerd" Katsuki said as he attacked izuku on the call "wait kacchan stop" izuku squeaked out

 "good lucky deku" uraraka said on the call "wait what uraraka?" izuku asked her "aw well.." uraraka said but got interrupted by Katsuki "come on nerd let's go" he said to him "oh ok kacchan" izuku said turning his head to look at Katsuki as he was dragged away "by guys" izuku said before leaving the call minewhile the others talked for a bit then momo ended the call as she looked over at ida her alpha mate with a smile*)

Meanwhile back in your room you slept with your alpha mate shoto todoroki now that he has claimed you as his own you now spent the rest of your life together with him even after the graduation ceremony from UA high

 you and him moved into apartment together both living as a happy couple until you and him had gotten married two years later you had two wonderful children with your alpha shoto todoroki you had one boy and one girl you loved them your two children and your loving alpha shoto. 

The boy your first born child had his multi-colored hair and had your e/c you and shoto had named the son hokaru yaoyorozu todoroki (meaning of the name "Amber") and the girl your second born child had your black hair and had his heterochromatic eyes you and him had named the daughter hotaru yaoyorozu todoroki (meaning of the name "firefly")

Name meaning
Hokaru - Amber
Hotaru - firefly

Word count: 2987
i changed a few things with story. i didn't like how blocky it was with the paragraphs.  even tho it was originally used to be a twin sister to denki. i hated the idea so yeah. my first omega/ alpha au story shoto todoroki. Hope you guys enjoy the story! See you guys in the next story ✌️