You flew to Midoriya's location to see him, Iida, and Todoroki in a dark alley way fighting the deadly hero killer, stain. Iida and Midoriya were down on the ground leaving Todoroki to fight stain by himself, until you arrived.

Midoriya's POV

The hero killer had Me and Iida paralyzed as Todoroki was about to get his arm cut off

Midoriya: TODOROKI!!

Stain: You're dead kid!

Iida: NOO!!

Suddenly I see a ball of light zoom past me as it hit stain blowing him away. I look back to see Y/N.

Midoriya: Y/N!

Iida: Y/N too?! Stay back, This is my fight!!

Y/N: I was almost too late to save you

Midoriya: Y/N hold on! What did you see the nomu Attacking the place?

Y/N: Yeah, I took care of them, which means bandana boy here is the only goon left.

Stain: Ugh, you kids are so eager to throw your lives away!

3rd POV

Stain was running at you as you began run at stain as well.

Todoroki: Y/N, watch for his blades! If he cuts you then you're a goner!

Y/N: I see, good to know.

Suddenly you formed a green blade of Ki from your arm.

Midoriya: since when could he do that?!

Y/N: you wanna play with blades? Then fine!

Stain: Don't get cocky just because you landed a cheap shot!

The two of you rushed at each other as you blades collided, he swung a knife at you, just barely managed to dodge as his knife cut a small strand of hair. You then did a back flip, kicking him in the chin in the process. He went flying up a little bit as you saw this as an opportunity, Your fist was coated in a light blue aura as you jumped to him and landed a nasty punch to the stomach making him spit up a bit.
He hit the ground which made a crater. Before he got up he threw a throwing knife at you as it cut your cheek.

Y/N: Dammit!

You jumped back to Midoriya and Iida used small shockwaves to send pulses back into their bodies allowing them to move again.

Y/N: Finish Him Off!!!

Todoroki used ice to send stain into the air as Midoriya and Iida leaped to him.

Midoriya: (I have my fist, that's all I need!)

Iida: (I have my legs, that's all I need!)

Todoroki: (Go guys...)

A smile then spread across Todoroki's face.

The two landed a combined blow dealing a lot of damage,

Stain: Your gonna need more than that!!!

Iida then prepared his leg for impact.

Iida: Recipro! Extend!

Iida landed another kick doing dealing even more damage are Todoroki then got him with fire. Stain's eyes rolled to the back of his head

Y/N: They did it!

Todoroki made more ice catching Iida and Midoriya sliding them to the ground as their heads hit the wall.

Todoroki: Stand up, this fight might not be over.

You all looked to see stain laying in the ice unconscious.

Midoriya: we should tie him up.

Iida: Yes.

Y/N: we should probably disarm him as well.

You all headed out of the ally way with stain tied up.

???: huh?! What are you doing here?!?!

You turned to see a short old man who seemed to be angry.

Midoriya: Huh? Gran tori-

He was cut off by a foot to his face

Gran Torino: I thought I told you to stay on the train!

Y/N: who's this?

Midoriya: Gran Torino, the Hero I'm interning with.

Y/N: oh

Suddenly the pros from the nomu Attack showed up.

Pro 1: Is that...

Pro 2: The hero killer stain!!

Y/N: yeah, we got him good!

Suddenly the winged nomu from earlier swooped down and grabbed Midoriya. Flying away with him.

Iida: Midoriya!

Pro 2: it's the nomu from before!

Y/N: I blew a hole in him! How durable is he?!
How durable am I??? Questions for later.

You were about to rush the nomu until it stopped letting out screech. Someone then ran past you.

Stain: this world is filled with fake heroes!

He then jumped at the nomu.

Stain: Everybody thinks their safe In this stupid society!

He then stabbed the nomu in its head as they fell to the ground grabbing Midoriya.

Stain: there is only one I'll let kill me.

He then let go of Midoriya. And faced you and the others. Giving a look that even shook fear in your heart.

Stain: ALL MIGHT IS WORTHY!!!!!!!

He then stopped in his tracks as his pupils disappeared and he started drooling.

Y/N: what happened???

???: A broken rib pierced his lung.

You heard a voice, you all looked up at a building to see cumber.

Midoriya: it's you! The one Y/N fought at the USJ!

You started to growl.

Y/N: so, our fight isn't over yet.

Cumber: as much as I'd like to fight you all, I have more important things to attend to.

You then flew at cumber.

Y/N: you're not getting away!!!

He then disappeared.

Y/N:...CUMBERRRR!!!!!!

You then passed out due to exhaustion.

Midoriya: Y/N!!

The next day

You woke up in a bed at the hospital, you got up from bed remembering what happened.
You went to the hallway as you saw a man that looked like a dog walking out. You went in the room to see Midoriya and the others.

Iida: Y/N! You're awake!

Y/N: yeah I'm up, how are you guys?

Midoriya: Were fine, are you ok?

Y/N: yeah I'm fine

You then got your normal clothes on and headed home as internships were over.

Y/N: whew! It's been a long week.

[There should be a GIF or video here. Update the app now to see it.]