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Kacchan-nii

Summary:

As long as he can remember, he had been staying on his bed since he was little. He's weak and frail so he knew it can't be helped. He's lonely as he watched the other kids from his window play with their friends everyday. It hurts to be weak and there's nothing he can do about it.

But as long as he has his Kacchan-nii by his side, he knew he'll be okay.

A fluffy and angsty au wherein Katsuki and Izuku are twins.

Notes:

Hello!
I'm back! And I know I still have to update my other fic *coughs* that has been forgotten already *coughs* but I just need to get this story out.... Then promise I'll get to my other fic *w*

I really want to see this kind of story here in AO3 but I just can't find any soooooo I decided to write my own! I'm not good in English but I'll do my best!

Sorry if this the 1st chapter is a bit short, gonna add a lengthy one next time~

Hope you like this! :3

(See the end of the work for more notes.)

Chapter 1: The twins, Kacchan and Izu

Chapter Text

Midoriya Inko have always wished to have her own family one day. Unfortunately, she is having a hard time getting pregnant and almost gave up. Until her two miracles happened in the form of Katsuki and Izuku Midoriya.

She adored the two of them, even being twins, Katsuki and Izuku are like the opposite of each other. Katsuki is loud and grumpy while Izuku is always calm and quiet. Taking care of them is not easy but she managed, knowing all the sleepless nights (mostly caused by Katsuki) are worth it for her two angels.

Everything is going well, the twins are both growing happy and healthy and are practically inseparable. You can always find Izuku at Katsuki's side, smiling wide to anything his brother is doing. Not that Katsuki also mind, he seems to be happy having his little brother's undivided attention. They also have a habit of staring at each other for hours like they are telepathically communicating with each other. Inko is worried but they will be giggling after so she brushed it off being a simple habit between twins.

Then came on their fourth birthday, Katsuki is already jumping in excitement to begin the party and he did not notice the excessive sweating from his hands. Little pops came out and Katsuki realized his quirk just came in! His excitement has doubled and he immediately showed his quirk to his little brother.

"Look Izu, my quirk is just like those fireworks we always see on New Year!"

"Woooaaah Kacchan's quirk is so awesome! I hope mine can be as beautiful as yours niichan!"

"Of course your quirk will be cool as mine. We are twins, remember? Your quirk will be coming soon too so be patient, okay?" as he hugged his twin so lovingly.

"Okay! Kacchan's always right!" who smiled with such adoration towards his brother.

Inko can't help be amazed on how lucky she is for having two adorable kids. They really are like two angels who will always be there for each other. Looks like she don't need to be worried for the future.

"Oh Katsuki, my strong angel has finally showed his quirk! I'm so happy for you baby! We'll go to a quirk specialist tomorrow for them to check and register your quirk, okay? And Izuku, don't worry your quirk will definitely be great like your niichan's. How about we start the party? "

Both boys nodded and gave their mother their best toothy smiles.