On the bus ride to the USJ, Katsuki mostly shit on "Dunce face" and "Shitty hair". He didn't do much more than that as he sat beside you on the aisle seat except glaring at Midoriya.
Once you were there, he dragged you off of the bus by your sleeve, throwing you into bright daylight. "C'mon, bitch! We don't got all damn day!!"
You rolled your eyes and walked inside, met by Thirteen, a space hero who could make black holes with her quirk.
She made a speech about using quirks for the sake of human lives and to save and rescue people, all that junk.
You mostly sat there, ignoring everybody, hitching your thumbs through your belt loops and letting your eyes search the place. It was pretty amazing, actually. It had all sorts of areas and junk.
Your eyes were trained on the landfill area when you felt someone grab your arm and yank you backwards. You were broken from your little daydream and heard yelling and screaming.
"STAY TOGETHER!" You heard your teacher scream.
You looked around, dazed, confused, and panicky. You spotted a bright purple vortex portal about half a football field away, dozens of villains emerging.
"Is this one of the things?" You asked Denki, who had an iron grip on your arm as he inspected the joint.
"No, this is real!" he yelled back, also panicking. You felt another hand grab your arm and tug, ripping you away from Kaminari.
Bakugo spun you around to his chest. "STAY HERE!" He barked in your face, his hands warming as sparks popped from his palms, ready to ignite his explosions.
You suddenly felt some strange force sucking you away, Katsuki's hand still on yours. You were thrown onto your back in a room, fires burning away things.
It was the ruins zone.
You staggered to your feet, only to fall again when something shoved you down. A sting of pain as a line of blood marked itself across your arm.
There was an explosion as you scrambled up, recognizing this as an attack. Bakugo had blasted away Katana man, who had cut you, to Kirishima, whose skin and muscles had hardened and sharpened.
You held out your hand, melting the wall to thick, gooey cement and tar. It spilled a path across the room, stretching out with its fingertips to touch your shoes. You jumped backwards, your eyes fixated on two villains, and caused their molecules to cool, freezing them in place as you stole their energy. Your eyes were hooded as you did this, before looking sideways.
You looked at Katsuki. He was stuck waist-deep in the mix of tar and liquid cement, trying to move and being unable. He was screaming, trying to blow himself out but it was too sticky. Tears glistened in his eyes as he raged, throwing himself back and forth and side to side, shrieking.
You held out both of your hands, concentrating. It was the first time you'd ever tried this move out before, but you knew you could likely do it, from your studying of biology and molecules. Theoretically, one with the power to manipulate molecules could turn things to dust by suppressing the atomic charge, causing protons and electrons to turn to dust.
So, in basic English, you were destroying the molecules in the liquid cement-tar-mix and turning it to dust.
It was extremely risky, and if you had even the slightest trouble of containing it to purely the tar-cement, then you could possibly disintegrate the room, along with everyone in it.
Most likely including you.
You closed your eyes, breathing in deeply. The room in the air was thin because of the oxygen the multiple fires were eating up.
