Strange Magic (Peter Parker x reader)

Halloween

Y/n was ready and adding final touches to her costume in her room. The door bell rang and she ran out of her room and down the stairs.
Her dad was at the door looking confused.
"Uh y/n I believe there's a mushroom fighting plumber who wants you." He said smiling and Peter walked through the door wearing his Mario costume that was slightly too big and a fake mustache.
"Yeah thanks dad." She said rolling her eyes and walking towards Peter.
Her dad insisted that he took pictures of the two and suddenly there was another knock on the door. It turned out to be May who said Peter wouldn't let him take pictures so she followed him here and her and dr.Strange immediately started talking. The two posed for awkward photos and finally left.
"By the way I love your costume." The two heard may say walking out the door and laughed. Dr.Strange was just wearing his normal outfit since it was Halloween.
When the two arrived at the school they met up with Mj and Ned in the front to take pictures.
Mj was wearing her Luigi costume that was also slightly too big and a fake mustache, Ned had a mask and shell on his back.
"Oh my gosh your costumes are great!" Ned said excitedly.
"Peter you even got the hat! And y/n you the crown!"
"We got these for twenty dollars at party city." Peter replied.
Ned and Mj insisted that Peter and Y/n got more couple pictures and reluctantly they did. They finally went inside and immediately went to the snack table.
There was apparently a group costume contest that Ned wanted to be in but the slots were already filled. A slow song came on and Mj and Ned forced Peter and y/n into the dance floor.
They awkwardly danced when Peter quickly looked behind him and lead y/n out of the room.
"Peter what's wrong?" Y/n asked concerned.
"I think I just saw Alleneus." He said.
"Do you have your suit?" Y/n asked starting to get ready to fight.
"I do but you will be staying here." He said starting to leave.
"What no way I'm coming with you."
"No you aren't, Alleneus really wants to hurt you. Your safer here." Peter said sadly.
Y/n hugged Peter tightly.
"Be careful." She whispered.
"I will." He said back and took a step back and disappeared.
~~~
Y/n walked back into the room where the party was and sighed. She started looking for Mj and Ned when out of the corner of her eye she thought she saw something.
She turned around and saw nothing. She eventually found Mj leaning against the wall.
"Hey where's Ned?" Y/n asked.
"Getting food. Where's Peter?"
"Bathroom." Y/n quickly replied.
The two girls talked for a bit when y/n saw him. Alleneus. He was holding what looked like a red mask before going into a maintenance closet. Y/n's  blood ran cold.
"Mj I have to go use the bathroom. If anyone asks for me just tell them to call me or something." Y/n said running to the maintenance closet using her magic to change into her normal clothes not waiting for a reply.  she walked in, closed the door and saw a portal.
Without thinking she ran through the portal.
She was on some grassy hill or something.
"Hello again y/n." Alleneus said appearing behind her. She backed away and made shield thingies.
"What do you want from me?" She said trying to hide the fear in her voice.
"That's an easy answer. I want to kill you!" He said smiling evilly.
"That the only way I can fulfill my destiny." He summoned his relic sword and started attacking y/n.
"But every time." He continued. "Someone gets in the way." He swung his sword cutting her arm. "But not this time." He said as she punched him with a shield.
She somehow made a magic knife with her powers and tried to use that but she didn't know how to use it properly and was easily losing.
Alleneus grabbed her and lifted her off the ground.
"Goodbye little Strange." He said before he stabbed her.
                                       ~~~
"Mr.Strange, I think y/n's in trouble." Peter yelled as he entered her house.
"Why? What's wrong?" I just chased Alleneus all the way here and then he disappeared. Like actually. Like poof now I'm dust." Peter said trying to catch his breath and took his mask off.
Strange cursed, made a portal to the library and started doing some spell.
"Um what are you doing?" Peter asked.
"It's a tracking spell." He replied and Peter was slightly creeped out that there was a tracking spell.
"Listen there's something I haven't told either of you. But Alleneus has to kill Y/n or else his plan fails." Strange said quickly.
"What?!"
"Questions later there's no time come on." Strange said making the portal.
Once they were through they saw Alleneus holding y/n with a sword through her.
It was all a blur to Peter. He was crying.
Dr strange screamed and attacked Alleaneus.
Peter ran over to y/n and tried to stop her bleeding. She was barely alive. Blood was coming out of her mouth and side.
"Hey it's going to be ok. I promise." Peter said through tears.
"Peter.... I" She said.
"Don't talk it's going to be ok." He said hugging her tightly.
"Please don't leave me I love you." He whispered.
She went stiff.
"No."
Peter broke down crying.
                      Y/n Strange was dead.