No one said he couldn't be a villain

He smiled.

An explosion from a near by street caught his attention, momentarily snapping out of his depressed state.

"I should head back home" the green haired teen decided, knowing the sound would have alerted a near by hero. "Mom's probably worried that I'm not back yet" he mumbled getting himself up and leaving through the building.

Caught in his own head trying to make plans about what he should do now he couldn't become a hero in his quirkless condition, Izuku's head shot up at the sound of a shout followed by an explosion. It appears as though because he was lost in thought his legs had automatically taken him toward the fight like he usually did to take notes.

No reason to anymore though...

Curiosity, however got the best of him so he stopped to watch. With the large crowd of people it was hard to see what was happening but the reoccurring bangs of explosions was constant sounding like a fire cracker.

Elbowing his way through, thankful of his smaller size, Izuku was able to get closer to the source of the noise tensing slightly when he noticed the same sludge villain he'd encountered earlier.

"All Might must of dropped the bottle it was in when he tried to shake me off..."the teen concluded, "but I don't remember it being able to cause explo-"  Izuku stopped as he noticed the villain holding something, no someone!

"Kacchan!" He squeaked, why weren't the heroes helping him, they were all just standing there just watching, even the crowd was just watching, he was just watching! Can't they see he needs help! Heroes are meant to help right?!

Panicked Izuku looked around at the surroundings and raked through his mind to see if he could find something, anything to help Kacchan but...

Why? Because it's what a hero should do? But he can't be a hero. Because it's the right thing to do? But he's quirkless, what can he do, he can't if he can't even do that right?! Because anyone else would? No they wouldn't, they aren't, even the pro heroes aren't!

Because Katsuki's his friend?

Is he though? What has he ever done for Izuku? Katsuki gave him a nickname, Deku, meaning useless. Katsuki had constantly bullied him for years. Katsuki is the reason no ones his friend. Katsuki is the reason most people in their class, ( their school! )Won't look at let alone talk to Izuku without a tone of superiority because Katsuki is so strong and Katsuki doesn't like Izuku or anything to do with him! And Katsuki can be a hero and Katsuki can walk all over Izuku all Katsuki likes because Katsuki has a strong quirk and Midoriya doesn't!

Tears pricked at Izuku's eyes again, he's really done too mush crying lately. But this realisation that there really is not a single reason he should care what happens to Katsuki, that if anything he was actually glad? Glad that his childhood friend, turned daily tormentor, would soon be asphyxiated. All because no one would do anything, caused a slight glee to fill him making Izuku feel sick.

Why is he so twistedly happy about this? Because maybe Katsuki deserves it... after so many years of making Izuku feel like shît, after so many years of telling Izuku to just die, after so many years of hurting Izuku without receiving any punishment what so ever!  After so many long years of making Izuku so afraid, Katsuki was finally paying for everything he had done to him.

And when Katsuki's pleading eyes locked with Izuku's.

Izuku smiled.