Step siblings

Part9

You were looking for Derek. You found him in the hallway with a girl. He looked uncomfortable so you walked up to him and hugged him from behind.You whispers to Derek.
Y/n: you need me to pretend to be your gf?
Derek:yes plz and thank you.
Derek:hey babe.
He kissed you on the cheek
Y/n:hey derek.i need to swing by the house to get lunch.Is your mom home?
Derek:uhh no she's at work for the rest of the day.
Y/n ok I'll see you at the house after school?
Derek:no we're going to go hang with the boys at the beach after school.
Y/n: ok love you bye
Derek:love you too.
You walked away but right before the girl said...
???: I don't believe that's your gf. If so then kiss her
She smirked. You looked at derek shrug your shoulders and kissed him. You guys kissed for a good 10 seconds then you walked back to class. As you were walking in the class you saw mattia and made eye contact for about 10 seconds before you rolled your eyes at him. The class was over you were walking in the hall when someone pulled you into the janitors closet.
(YALL THERE IS RAPE RIGHT HERE)
Y/n:MATTIA MOVE
Mattia: shut the hell up y/n

He set up a camera then went live on (idk chose whatever sight)he started pulling your pants down and fingering you.you screamed for him to stop. He pulled his pants down and started thrusting into you. By now you were crying and screaming but no one came to help you. Mattia cum on the outside of your heat. He got his stuff stopped the live and left you there. You say there till someone came in
DEREK POV
I was looking for y/n all period I saw mattia was live so I went on cause why not. When I saw it. He was sexually assaulting y/n. I looked for y/n everywhere I couldn't find them anywhere I looked in all the rooms and closets. I went into a closet to go cry cause I couldn't find her. There she was sitting in the dark naked frozen and looked scared. I was about to hug her but she screamed.
Derek:y/n it's me derek look open your eyes

I took off my hoodie and put it over her body. She finally opened her eyes and she just sat there and hugged me tight. I carried her to the car and took drove home and put her in her bed that's in our room we share.