A/N: for this particular one shot Tomura Shigaraki is Izuku's and Eri's big brother and they were all taken by overhaul when Eri was a baby. Also shiggy goes by Tenko cause ya know that was his name before One for All found him.
Tenko: I want to get out of here someday...
Tenko whispered to his younger brother while holding his bruised sister.
Izu: me too Nii-Chan. Do you think we will?
Tenko knew the answer, he knew they would never be free again. But he just couldn't tell a toddler that, Izuku was only 6. He had just gotten his quirk even. It was much like Tenko's quirk. Although it was a weaker version.
Tenko: yeah, yeah Zu we will.....
The younger boy smiled faintly and yawned.
Izu: I'm sleepy Ten-Chan.....
Tenko: take a nap I'll be here when you wake up. I promise.
That conversation was almost 10 years ago. Tenko is now almost 18 and Izuku is just over 16. Poor little Eri is only 8. That's how old Tenko was when they were taken. Neither of the boys remember what fresh air smells like. Eri has never been outside in her life.
Eri: Izu-Chan, why do they take us away from each other for a while? Why did they take Ten-Chan with them?
Izuku: Eri they are taking out blood. They have been for a while now.
Izuku couldn't lie to her anymore. He used to tell her that they would take him and Tenko outside to play because they were good that day. But they'll soon start taking Eri too. She got her quirk but neither of the boys told anyone and told her not to use it.
Eri: but Izu-Nii and Tenko-Nii are strong and can fight them!
Izu: no we aren't Eri. We tried but we got hurt. Tenko-Nii almost died....
She burst into tear and hugged me tightly.
Izu: this is why no one can know about your power okay?
She nodded and Izuku heard footsteps coming down the stairs into their "room." He flinched when the door was swung open and Tenko was thrown in barely breathing and all shades of purple. The door closed again and Eri walked over to him. She smiled sadly and a light flashed. Tenko was back to almost normal and smiled. The boys had trained her with her quirk and she could somewhat control it. The only problem was that overhauls men were getting suspicious.
Tenko: I'm fine Eri you didn't need to do that.
Eri: but Tenko-Nii wasn't breathing!
He frowned and silently wished that he hadn't been breathing. Her quirk wouldn't have worked and he would have been free. He didn't want to leave his siblings there so he had ran when he had the chance and bumped into a hero telling him where to find the kids. He knew he couldn't get out, especially since he had to murder people to survive.
Izuku: Ten-Chan why were you gone so long today?
Tenko: your both going to be free...
Tenko froze up when he heard footsteps heading their way. The door slammed open again and overhaul looked shocked. He stared at Eri and then glared at the two boys.
Overhaul: YOU LIARS! SHE HAS A QUIRK!
Izuku stood up and walked to overhaul. He touched him with all 5 fingers and overhauls arm slightly disintegrated. Overhaul got mad and took off his glove slapping Izuku. Izuku exploded and Eri screamed. Then overhaul touched Izukus blood and Izuku was back again but crying.
Overhaul: stupid fucking Deku. You little brat show me your quirk.
Eri: I- I- I don't have one yet....
Overhaul got mad and looked at Tenko.
Overhaul: shigaraki who healed you.
Tenko: my name isn't shigaraki. And one of your men did. I didn't see who...
Overhaul grunted and stormed off to find whoever healed Tenko.
Izu: that's why he can't know Eri.....
A few weeks later hero's came to the rescue. Eri had heard what Hero's are and so the moment she saw one she ran to her. It was a girl who had green hair kinda like Izuku so she felt safe.
Froppy: are you the only one here?
Eri: no my brothers were being taken by Overhaul that way.
She pointed towards a hallway and the green haired hero ran outside with Eri while the others chased overhaul. When they found overhaul he had two fairly young boys both in their teens, holding each other's necks. Each had one finger off.
Overhaul: come any close and I'll have to see whose quirk works faster!
Froppy had taken a wrong turn and was also watching with Eri from a hidden spot. Eri was crying and holding tightly to the green haired hero.
Suneater: leave the boys alone now.
Eraserhead: how old are you two?
They looked like they were barely 10 each.
Izu: s-sixteen....
Tenko: s-seventeen.
They were both crying and nodded to each other.
Izu: where's our sister?
Suneater: the little girl is with the other hero's.
Tenko: good. Make sure she knows we love her and it isn't her fault.
The hero's were confused but the boys both touched the last finger and both boys became dust. The hero's looked surprised and overhaul looked angry. They heard a scream and a small girl, who they presumed was Eri, ran to the piles of dust. She began glowing and yellow surrounded her. Nothing happened so she stopped glowing and overhaul tried to grab her but she ran back to Froppy.
Overhaul: THE BRATS LIED THEN RUINED MY PROJECT!
Eraserhead used his quirk and lemillion quickly caught overhaul and put him in hand cuffs. Froppy was rocking Eri back and forth and humming to her.
Eri: I got out of here for you....
Froppy smiled slightly at her and walked out of the building and to Uravity who was looking at her shocked.
Froppy: she had to watch her older brothers kill each other... she fell asleep now.

YOU ARE READING
Mha sad one shots ig
FanfictionThe title says all so if you wanna cry then here. I may make multiple different versions with the same ending and beginning so yeah.