Yukio Okumura X Reader OS

Yukio X Reader

Silence filled the room. All eyes were on a certain someone as he drooled on his textbook, deep in his peaceful sleep. The teacher stopped reading and was also looking at this someone; eyes twitching with pure annoyance. The spell book she was reading to the class was closed shut as she slowly walked to this person. 
Step. 
Step. 
Step. 
 She stopped at the desk, dark aura flying from her body as she glared at the person who had no clue what was going on. Everyone held their breath, waiting to see what the teacher will do. As if they didnt know what to expect. But they knew very well.
 The spell book was raised high in the air. People would think it was touching the ceiling. 
"How many times do I have to tell you not to SLEEP DURING CLASS!!!"
Then, it was brought down on this persons head with a very loud smack.
"YOWCH!!!"
 He bolted up with incredible speed and held his head as the students laughed at him. 
 He put on foot on the table, glaring at the person who just smacked him. 
"Hey _____," he shouted, "what's the big idea hitting me like that?! That's the seventh time for the past fifteen minutes!"
Yes. You were the homeroom teacher. Or a substitute for today. The former teacher ran out of the classroom claiming he was needed somewhere. The truth was his wife called him for something. So he sort of kidnapped you and placed you in the room as the teacher for his class. 
You have been in the academy ever since Satan had killed your parents that night  when most priests were  killed. Now you were a middle class exorcist despite your young age. You worked hard to become a exorcist, wanting to carry out your fathers last wishes. 
 You smacked the boy again, making him fall back into his seat. "Well if someone didn't fall asleep after I smack him this wouldn't have to continue now would it Rin Okumura?!"
 Rin crossed his arms and pouted, mumbling. "I wouldn't fall asleep if this class wasn't so boring!"
 "That's not true Nii-san," his brother Yukio exclaimed, turning his head to face his brother. "____-chan is a very good teacher! Everyone loves listening to her. Besides, you fall asleep in every class."
 "Who side are you on Yukio?!"
 "I agree with Yuki-chan," Shinemi said in a quiet voice. "____-chan explains everything clearly so everyone understands."
 "Well I don't," Rin stubbornly said. 
 "That's because you sleep through every class," muttered Yukio. 
 He turned to you and smiled. "Continue _____-chan. I'm sure Nii-san won't fall asleep again."
"You said that seven times sensei," Suguro grumbled. 
Ignoring what he said, you smiled sweetly at Yukio and he smiled back. 
"Eeeeeew," Rin gagged. "Just because you two are together doesn't mean you have act lovey dovey. Get a room."
You turned deep red and glared daggers at Rin. Yukio turned his face to cover up his color cheeks, but he failed miserably. 
Suddenly, before you got to strangle that no good devil boy, the bell rung for lunch. He ran out of the classroom to save his life from your wrath. 
Everyone else left one after the other until it was only Yukio and yourself in the room. You sighed and slumped into the seat next to him, laying your head on his lap. You gazed up at him and puffed your cheek out. He poked it, letting the air come out of your mouth, chuckling. 
"Are you alright," he asked. 
"How do you live with him I'll never know," you complained. "He's a work and a half!"
"He may be but he has his good side. Studying is not his cup of tea."
"You liked my class, right?"
"Of course I did. And I'm sure everyone else did too."
He played with your (h/l) (h/c) hair before making you sit up while you still grumbled about his twin. 
"And what does he mean by not being lovey dovey?! All I did was smile. He's just jealous because he can't ask Shinemi out. And -"
A pair of lips interrupted your continuous complaints, taking you by surprise. Not even asking for permission, Yukio forced his tongue into your mouth, tasting the sweet peppermint you had just finished chewing. You moaned as his tongue tickled the roof of your mouth. You wrapped your arms around his neck as his arms pulled you on his lap. 
Before you declared war for dominance, he pulled away. You whined alittle, wanting to have your little fight. 
"No more talking about Nii-san, got it," he said. 
You nodded. His finger trailed down your side, making you squirm on his lap. "Y-Yukio?!"
"Hmm...?"
"Don't - do that!"
"Why not?"
"Not here!"
He smiled and kissed you chastely. "Fine. But this isn't over. I guess we'll take Nii-san's advice."