Our flames made us who we are (Dabi X F Reader X ???)

U.A

I decided that i was going to surprise katsuki and izuku today to let them know that i was back so this morning i got up did my hair and put my uniform on complete with all my piercings. (Lip, ears, tounge and eyebrow). Then i tied my blazer around my waist and brushed down my shirt and jeans before putting my tie on and then i put my bandages on my hands and wrists. Then i ran downstairs and had whatever my mother cooked for breakfast. Once that was done i grabbed my bag and ran out the door as quickly as possible to get to school on time.

Once i got to school i saw katsuki with a red haired boy who was Kirishima i think. So i ran up behind him and tackled him to the floor. Of course his usual reaction was:
"GET OFF ME YOU EXTRA"
i think Kirishima was very confused on why i did such but he knew that i was new.
"Hey bakubro don't be so mean to the new student he probably thought you were someone else"
"Ugh whatever"
So i got up and held my hand out to help him up...after all i was the reason he was on the floor anyway.
"Sorry katsuki. I didn't mean to push you to the floor"
"H-huh!?. Wha-. What did you just call me??"
"Katsuki?"
"There's only one person who calls me that...who isn't my mother of course. What's your name?"
*in Kirishimas head*
He's never paid attention to new students before. What's the difference with this one.
*back to reality*
"My names Ash. Do you not remember me katsuki"
"H-Hot head?!. HOW. WHEN. WHERE. WHAT!?"
"I moved back last week but i wanted to surprise you and izuku. So please don't tell him im back"
"I won't. But why didn't you tell me you came back. I was home on the weekend you could've came and said hi then"
"Yeah i know but i was busy"
"If I'm honest i kinda thought you were back when the news reported on seeing green flames putting out the blue flames. And i know what your quirk is so i kinda thought it was you. Guess i was right after all."
"Bakubro who is he?"
"Oh yeah right. Shitty hair this is Ash. She is me and deku's childhood bestfriend until she moved away to england. But now she's back"
"Oh. Ok well its nice to meet you. As bakubro said my name is Kirishima you can call me kiri though."
"He didnt say your name was kirishima but Its nice to meet you too kiri. I hope we could be friends. Anyway I'll speak to you guys later i have to go surprise izuku"
"See you hot head. Good luck he's still a cry baby by the way"
"Oh shut up katsuki"
"Whatever hot head"

Once i finally found izuku i ran up behind him and swung me arms around him and lit my arms up in green flames so it wouldn't harm him.

He was with Todoroki and iida and uraraka i think their names were. And Todoroki suddenly shot ice at me so i had to use my blue  flames to melt it before the ice it me. Then when he stopped izuku looked like he was ready to punch me really hard. Luckily katsuki came to my rescue and explained everything so i wouldn't get my ass beat. As soon as he knew who i was he started apologizing ALOT. Classical izuku.
"I'm so sorry Ash i didn't realize it was you. Im so so sorry."
"Don't worry its fine izuku"
"Midoriya who is this"
"Oh right. Todoroki, uraraka, iida this is Ash me and kachan's childhood best friend. She moved to England for a while then she moved back here."
"Ok. Well I'm Shoto Todoroki."
"Todoroki? Where have i heard that before..."
"My father is Endervor so that's probably heard it. Or maybe the sports festival"
"Hmm. Maybe"
"As class president i must order you guys to go to class now"
"Oh iida clam down we are right outside the class door. We won't be late ok"
"Uraraka as reassuring that may be i must order you to class"
"Well I'm looking forward to it personally. Apparently All might is your teacher?"
"Yes indeed"
"Hot head trust me...its not that fun. Its a pain in the ass"
"Hey bakubro. You left me and Kirishima behind"
"So. What do you want dunce face"
"Katsuki."
"Whhhhaaaaaaattttt"
"That's mean y'know"
"Couldn't care less"
"Apparently so"
I lit my body up in black flames while katsuki started sparking up. Then i was suddenly being held back by Todoroki the he freezed my wrists together so i couldn't move while kiri held katsuki back.
*both Ash and Katsuki* "LET ME GO!"
I lit my whole body up in pink flames and melted the ice and Katsuki made explosions to keep himself in the air out of kiri's reach. Then suddenly the alarm went off...villains were attacking. Mr Aizawa came out of no where and hurried us into the classroom and locked the door. Both me and katsuki protested to this and we wanted the door to open so we could fight... Then our wish came true. The door went up in flames and through the flames walked through the dark future from before.