Class 1A was just chilling in the dorms watching TV until the news came on about some people getting murdered in a building, it said there was blood all over the walls and the corpse was gone. Mina had remembered your creepy pasta story and thought about it and got frightened not wanting to belive it was real

Mina:Guys I think (your creepy pasta name here) is real...scared

Deku: hey mina calm down i'm sure its just a villain nervous and didnt wanna think about your story

Bakugo: PFFT WHAT A SCARED LOSER HAHAHA, IM NOT SCARED OF SOME CREEPY PASTA

Denki: Oh god don't even talk about it I already have shivers down my spine..shivers

Kirishima: Hey, its alright creepy pastas arent real bro. chill out okay? reassuring and nervous

Todoroki: Hes right its just fake anyways he wasn't scared at all

Uraraka: hugs mina yeah im pretty horrifed...

Tsuyu: thats so scary kero...wrapped in a blanket on the couch

Mineta: WAHHH SOME CREEPY PASTA IS REAL NOW!? freaking out

Sero: Chill out its just an urban legend anyways...at least I hope so..nervous and decides to head to bed

Sooner or later you were done killing some people then you came across the UA dorms where everyone else was at, you were sneaking around the dorms without being caught, some were sleeping and some were out in the living room

(say your creepy pasta name and explain your backstory lore)