Help me

Heyyy! I have to say that i'm not english! This is actually the very first time i write in english so please forgive any mistake you could meet during this story!

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UA sport Festival finished some weeks ago. But because of his injuries, Midoriya hadn't been allowed to participate.

Right now, class 1-A was training on the ground Alpha, to perfect their attacks.

The green haired boy was observing his classmates. They all progressed during the sport festival while he was in a bed, watching the event on the TV.

His eyes turned to Kirishima, a boy with colored red hair. His quirk allowed his to harden all his body! It was a pretty interesting quirk!

Midoriya approached the boy and put his hand on his shoulder:

- Hey Kirishima-Kun! Do your teeth also harden when you use your quirk? He asked.

The students around them sighed. Even if they were used to Midoriya's weird questions, they were still surprising.

- I don't know man! But we can try after the class if you want! the boy answers happily.

- Yeah sure!

They started talking again until the red-haired boy yelled:

- Watch out Midoriya! Behind you!

But before he could do anything, the green haired boy felt a cold burst travel through his chest. Coughing up what he had in his mouth, he fell down, gasping.

A cold travelled through him, freezing him while the class ran to him.

Hand clutched on his heart, Izuku was breathing hard. All the sounds around him seemed far away.

Todoroki, whose the magic fell out of control, rapidly joined the boy and his classmates. It was his fault if Midoriya was hurt now. He was the one who lost control of his quirk.

Ice had started to freeze his body which kept him from moving correctly. Then, a piece of ice broke towards his green haired classmate.

- Midoriya! He yelled and put his hand on the boy's back.

Under his panicked gaze, Midoriya started regaining his colors and his breath calmed down:

- Call Recovery Girl! Quick! Kirishima screamed.

Midoriya finally got out of his panic and hardly got up:

- No, it's okay, don't worry!

Uraraka caught his shoulder:

- Are you sure? Not even ten seconds ago, you were down!

Izuku nodded:

- Yes! I'm sure it's not that bad! He said, removing his hand from his heart.

He suddenly froze. There was no blood at all. No injury:

- Well actually, it's nothing at all...

Aizawa then started:

- Good, if you feel better now, we can go back to training. Go ahead kids.

The students nodded and got back to their place.

But Izuku didn't move. He was sure something passed through him. But there was nothing.

Todoroki was watching him. He did see a piece of his ice pierce his classmate's chest. A grimace found its place of his face. He had to work better and control his ice. He had to perfect it.