Kirishima was stuck in a rock and hard place which considering his quirk was pretty ironic =. The young One For All user with both both of his arms broken and hanging limply by his sides as he could only stare at his teacher being to beaten to his death by the Nomu.

With nothing left to lose he prepared to launch himself using one for all for one final attack hoping the Nomu would target him but before he could do that a golden sword came out of nowhere and landed in the middle of the USJ. Immediately the golden sword disappeared teleporting a green-haired person wearing a green dress shirt and black pants with his sleeves rolled up and green gloves on his hands.

"Huh! Who is this brat?" Shigaraki questioned.

"C- class villains like you don't deserve to know my name" the mysterious person said in a cold emotionless voice. As the person lifted his face Kirishima saw the coldest eyes he has ever seen. His eyes seemed to say 'This is a waste of time'.

"WHAT DID YOU SAY! NOMU KILL THE BRAT" Shigaraki exclaimed in anger.

The Nomu immediately ran towards the mysterious person with a huge shockwave behind him

"BE CAREFUL!" Kirishima shouted but then he saw something which shocked him too his core. The Nomu was being suppressed and kept in place by the person with one hand. Then suddenly green flames burst out of his hand engulfing the Nomu in a few seconds leaving nothing but ashes.

Kirishima looked back to see a purple portal closing indicating Kurogiri and had left with Shigaraki.

The mysterious didn't even look bothered seeing the portal closing. Suddenly Kirishima felt a warm presence and was shocked to see a golden dagger imbedded in him and healing him the same thing also happening with Aizawa.

As his adrenaline ran out he managed to ask "Who are you?".

The person replied "I am Emerald" his name representing his emerald flames as he brought out a golden sword similar to the one he teleported and crushed it immediately gone….

And Cut.. for now.

This was my first fic hope u liked it even tho its short. Criticism is very much appreciated.