Anime x reader one-shot

(Blue Exorcist)☁ Alpha!Rin x Omega!Demon!Reader

But when I entered the bathroom, I could feel that something was off. I slowly started to strip down and was still in my undergarments, when the door to the restroom opened and two of my female classmates entered. I moved to a different side of the bathroom as I hide from them. Izumo is one of the Alphas in the class so I can't take off my collar or else they'll know I'm an Omega. So I simply sat and waited for the two to leave after they bathed.

Suddenly there was a scream as a ghoul stood over Paku, a Beta. Izumo tried to attack with her summon's but she wasn't strong-willed enough to control them. So without thinking I got in between her and her rogue summons. With a harsh growl, the white foxes whimpered away in fear.

Soon Rin and everyone else ran into the bathroom.

"Where's Mr.Okumura?!" Izumo asked.

"There was another Demon on the way here, so-," Rin was cut off the ghoul grabbed him, and tossed him to the other side of the bathroom.

Everyone froze in fear as they watched their classmate struggle to fight off the demon. Y/n quickly grabbed Rin's dropped sword and ran towards the monster, and used all her might and swung the sword down on the demon's head.

The demon slowly turned to Y/n and took a large swipe. Y/n dodged the swipe, but the demon's claws ripped her collar right off. Soon the room was filled with a flower meadow scent.

"An Omega? What The hell is the is an Omega doing here! Y/n you were not allowed to be here!" Bon shouted.

"It's dangerous for an Omega to face a demon!" Konekomaru shouted in worry.

The demon lunged at the Omega as it let out an Alpha roar of its own. All the betas in the room whimpered to the back of the room, while the alphas fought against their flight response. Rin watched a Y/n trembled at the demonic alpha roar.

"T-this is why Omegas can't be exorcists, their instincts tell them to submit to demons like that," Izumo said with a slight tremble.

Y/n growled as a foxtail appeared from her backside along with a pair of ears. She lunged with her claws out and started to tare the demons at the seems. The demon wailed in pain as it tossed her aside and escaped through the window.

As Y/n slowly stood up from only meet the judging eyes of her classmates. They stood there in horror or disgust at Y/n's true colors.with her head low Y/n tried to walk around the group by taking the longer route out the bathroom.

"Where do you think you're going," Bon growled with his Alpha voice.

Y/n froze in her spot as she turned to look at Bon.

"I don't need to answer to you," Y/n said simply as tears ran down her cheeks, as she continued her way to the door.

"Stay right were you are!" Bon ordered.

"No," was all Y/n said as she left the room.

The group stared in shock at Y/n's response, and how she so easily  just disregareded Bons orders. 

"What kind of Omega is she?!" Shima asked in shock.

"She ignored Bon so easily," Shiemi awed.

As they Group slowly left the bathroom, but Rin went his own way to track down Y/n. It was pretty easy since her scent was easy to tace. Rin quickly found her in her room, still only in her undergarments as she sat in the corner of her room.

"What do you want?" Y/n asked with a low growl.

"I just wanted to talk... with you," Rin said slowly.

Rin slowly sat down next to the half naked girl. They simple sat in silence of a good long while till Rin finally spoke up.

"So why are you here to exorcise demons, when your a demon too?" Rin asked quietly.

"I did it because,Mephisto. He said he would keep my famiy safe as long as I became a "lap dog " for the exorcist. That's was the only reason why I continued my lesson," Y/n said slowly.

"Was?" Rin asked.

"Well then I met all of you, I didn't think much of it at first. Yet your so selfless and kind, demon or human your willing to give them a chance. You do what you feel is right. I can't think of many exocrsit like that,'' Y/n said as she looked up to rin.

"I-Is that really how you see me?" Rin asked as he looked down at his cursed sword.

"Indeed," Y/n smiled weakly.

Rin stared at her for a few seconds and let out a shacky breath.

"I-I have a big secret too, and I want too show it to you, and only you," Rin said shackly as he gripped the sword.

He held the sheath in front of him and with a second of hesitence drew the blade. His body suddenly bursted into blue flames, his demon self was revealed. Y/n stared in awe at the flames as danced around him.

"So your the Demon Prince," was all Y/n could say.

"Yeah, I want to become an exorstist because satan killed someone I cared about, so want to destroy him," Rin said as his flames died down.

"So I wasn't the only demon in this school," Y/n said.

"Yeah, you weren't the only one," Rin smiled as he reseathed his sword.

"You really are an amazing Alpha Rin," Y/n sighed.

"So are you, your really slik when it comes to combat. I really admire that about you, though I didn't apperiate that time you tricked me and Bon to take out those demons for you," Rin said bitterly with a childish pout.

"HAHAHA! I'm sorry, I just like fighting smarter not harder. Though I think Shiemi is looking for you know," Y/n said as her ears twiched.

"I-I just want to spend time with you," Rin said as he sat next to her.

Y/n's heart raced as sat close, she could tell that he was tense. There was more he wanted to ask.

"Hey, when this boot camp is over, You should come by for dinner. I'd be happy to cook for you," Rin smiled.

"Aww that's sweet, but also cheesy," Y/n giggled.

'Wha-What  more do you want from me?!" Rin growled childishly.

"I'd love to Come over for dinner," Y/n smiled.

"A-also... will...Be my... Omega," Rin asked nervesly.

Y/n's hair covered her eyes as she sat in silence. Rin could hear this heart pound in his chest as he waited for her response. Y/n soon scooted closer to Rin with a purr as she smiled.

"I'd love to, Alpha," Y/m smiled as she rested her head on his shoulder.

Rin smiled as he leaned closely as the two nodded off.