"I knew you wanted to play Otouto~"
He had no idea how he ended up where he was. But there was nothing he could do about it now.
"Oh~ Shut... Up!" Rin said in between pants as Amaimon fucked him hard.
"What's the problem?"
"No just.. be... Quiet." He clung to the demon king's neck.
"Oh god Amai-I'm gonna come!"
"Then do it."
/
Rin jumped on the ledge of their dorm room window and opened it silently, climbing inside as to not wake his brother. But when he was finally inside he turned around and saw a very pissed looking Yukio, sitting down and staring right at him. Oh shit I'm in trouble.
"Yu-"
"Where the fuck were you?"
Rin's eyebrows rose a little. It was out of character for Yukio to curse. Even though he was pissed he still remained stoic. The demon just wondered how that was possible.
"Um... I-"
"You can be honest."
"Well..."
Rin realized Yukio uncrossed his arms from where he sat and his face softened.
"Rin you were out all night. It's seven in the morning and you're just coming in after you ran off last night. Now tell me where you were. I won't get mad alright?"
For some reason Rin didn't believe his words.
"Yukio...I... I did it." Rin's eyes were glued to the floor.
"Did what Kitten?" Yukio's tone was serious even though he called him 'Kitten.'Oh god don't guilt trip me.
"I... had sex... with.. Amaimon."
He waited for his brother to yell. His blue eyes shot up when he heard silence and saw Yukio's indifferent expression.
"I'm SO sorry Yukio! I don't know what came over me! I didn't me-"
"It's alright."
"W-What?"
"I said it's alright. I've noticed you've been acting strange lately. I'm not mad."
It was hard to tell if he was angry or not with his oh-so-serious persona.
"You sure?"
"Yes."
The demon visibly relaxed.
"But-"
Rin shut his eyes at the 'but.' He should have known there was going to be a punishment.
"I want to be involved next time."
"You what!"
"I'm immensely jealous that Amaimon has taken you from me, since I know of course you didn't top."
"What's that suppose to mean! I could top... if I wanted."
"But you know you love it when it's back there."
Yukio gestured to Rin's lower back and the demon blushed. Rin nodded defeated. He was right. Rin looked up and noticed there was a gleam in Yukio's eyes.
"You mean you want us both to do it with Amaimon..." Rin's expression a mix of excitement and surprise that seemed a bit...staged.
"Well, why not. Isn't that what you want?"
"Yeah alot."
"Then it's settled. We'll get him to come here and then you know, you can ask him."
"Eh? Why me?"
"Because you already fucked him."
Rin shivered when Yukio emphasized the word 'fuck.' For some reason it turned him on when Yukio talked dirty or curse because he was usually so prim and proper about everything.
"Alright. Fine."
"Good. Now kiss me."
"Bu-mmph!"
By the time Rin could reply his lips were attacked.
"Your mine, Niisan."
Yukio began to claim his mouth and Rin's eyes closed automatically. Rin felt his brother assault his tongue brutally. Yukio pushed him down on the bed gently and kissed him more. Shit I'm losing control.
Aqua-green eyes opened as he gasped in shock when Rin flipped them over and put himself on top.
"Niisan?"
There was no response as Rin began ripping his twin's clothes to shreds. He began to rub himself on his brother's erection. The young exorcist moaned in surprise. Rin had never been so forward. He was always shy and timid about sex. Where did this come from? Yukio blinked when he realized he was now naked and his glasses were snatched off and broken to the floor. He heard growling as his neck was attacked with rough bites.
"Rin... Niisan... Kitten are you ok?" He asked worriedly. No response.
Once Rin pulled away he looked down at his younger brother. His face was red and he looked so shocked. Yukio realized that something was odd about Rin's eyes but the thought was forgotten when Rin stood and began to undress himself. Rin attacked him once more. The demon grabbed his twin's erection roughly. Yukio gasped in pain. He needs to snap out of it.
Rin was snarling and growling like some sort of lustful animal. Then he got an idea. He reached behind the occupied demon and grabbed a certain sensitive black appendage that was thrashing about. Yukio sighed in relief when he got the desired effect.
"Ohhh~ Yuki-chan~"
Rin's eyes went back to normal but he continued to kiss all over his twin's body. Yukio began to pant. He knew Rin was acting strange but forgot about in the heat he was feeling.
Rin was still on top as he sat himself down on Yukio's throbbing erection, surprising the younger.
"Oh Rin!"
They had never done this position before but Yukio immediately decided he liked it. Rin started to thrust up and down on his brother.
"Niisan!"
Rin began to pant and moan. He grabbed Yukio's hand and guided it towards his own erection that hadn't been touched. He began to pump it to the rhythm of Rin's thrusts.
"Mmmmm yes! Yuki-chan more!"
His eyes shut tightly as he felt his release coming. Yukio accidentally let out a very high pitched squeak when Rin began gyrating like he always did when he was about to come. They both came at an instant, the same moan escaping their lips. They moaned softly and began to kiss. What has gotten into him?
"I love you, Yukio."
"I love you too, Niisan."
But neither noticed the honey eyes and pink hair watching from their window.
/
Yukio was preparing to go to bed. He honestly wasn't mad at Rin. Amaimon was hot whether the teacher wanted to admit it or not. He had a dark, emotionless but sadistic look to him. Rin looked over at his brother who was scribbling in a journal, that by the looks of it, he was trying to keep hidden from his younger twin. Yukio decided to ask just out of curiosity.
"What are you doing Niisan?"
When Rin turned to him from his bed on his side of the room, Yukio caught the demonic glow in his brother's eyes like when they were doing it. Rin slammed the book closed and his eyes went back to normal.
"Are you alright Kitten?"
"U-Um Yeah great!" He said too loudly.
"Spaz." Yukio muttered before flicking off his lamp and turning over.
"Goodnight, Niisan."
"Oh, night Yuki-chan!"
The young exorcist just sighed. What was he going to do with him? He smiled in his sleep at the thought of his brother's odd behavior. Rin was always keeping people on their toes with his emotions. He's been acting normal... right?