Even though I consider this chapter to be important plot-wise and sort of character-development-wise, you may see it as a filler. :D Just a warning(still read it of course!).

P.s. Nessie-san, Xaphan is indeed an Incubus. I'm ashamed to admit that you knew that before I did lol ;D

"Come in."

The exorcist closed the door behind him as he strolled towards Mephisto's desk.

"Yes, Yukio?"

They regarded each other for a moment before the brunette responded. "I won't ask why you sent a demon of such caliber after Rin. It's clear that you have plans that maybe even the council doesn't know about..." He slammed his wrists onto the table "But let me make this clear. If this goes outside of our deal, if Rin gets hurt…."

Mephisto sighed.

"The boy needs to be trained, what better way to sharpen Rin than by putting him against his own kind? He is our only weapon…against Satan."

Silence.

"Kidnapping innocent humans wasn't a part of the deal."

"Unfortunately I can't take credit for that one. And I doubt she's dead. Well, that's up to Rin now isn't it?"

He leered as Yukio turned and headed towards the exit, stopping at the door.

"Don't underestimate us…humans, Headmaster."

Mephisto raised an eyebrow as the door clicked closed. And then there was laughter.

I believe that was a threat.

" Don't underestimate them! Ha, these powerless creatures…how they tickle me."

Ring. Ring Riiinggg.

Ring Ring Ring Ring Ri-

Rin smashed the alarm clock before it could finish its morning dance.

"Damn clock! So…sleepy…"

He lazily reached over to the desk and grabbed his watch.

10:00 am. His eyes widened as he threw the sheets on to the ground.

"I'm late! So freaking late!" Panicking he reached for his school clothes which were folded on top of his desk, a note from his brother was tucked into the blazer's pocket.

Don't worry about class, rest if you need it. We'll talk later.

P.s. Do your laundry idiot! - Yukio

Do my laundry? Rest if I need it?

As he scrambled to the bathroom he did a double take in the mirror, noticing the bruises on his face. While touching the scars he realized that his own t-shirt had a bit of dried blood on it. A strangely familiar scent emanated from the cloth. It smelled almost like…

Yukio.

And then it hit him -his brother on top of him, the claws of a black-haired demon, Yukio's moans, fighting in a forest- memories of the previous night assaulted his mind, causing him to stagger.

He grabbed the counter in an attempt to regain his balance.

"Did we…"

Call my name

"Was that really…"

Ah…ha….Yukio!

Rin's cheeks turned a dark shade of red as he covered his mouth with a sweaty palm.

"…me?"

The half demon stared into the mirror, the more he looked the more he remembered the way his twin had licked his lips, bit into him as if he were a fruit, had shown no mercy.

SO WRONG!

Rin's thoughts screamed as he began to feel the impact of his realizations. He hit the mirror, shattering it to pieces, cutting his hand on loose shards of glass.

What have we done?

"Today, class, our topic will be on Incubi."

The class stirred.

"…incubi?"

"Is there a problem Ms. Kamiki?"

"Well no…I just…"

The door to the classroom slammed open, revealing a tousled, baggy-eyed Rin.

"I see you decided to show up to class today, Mr. Okumura."

The half demon scratched his head as he looked off to the side. "Yeah...well…."

"Have a seat. And please be on time tomorrow." Yukio flashed him the same calm smile he gave to all his students.

Rin sent his brother a stabbing glare before seating himself.

Yeah, and whose fault is that?

Yukio's glasses flashed as he returned the glare, fast enough for only his brother to see before he turned towards the board.

Yours.

Rin glared at his desk. Sometimes he wondered if he really knew his brother. Yukio was always kind to him, but he also had a tendency to be reserved. If something was upsetting him he'd rarely ever let his older brother see it. Even that smile just now wasn't completely honest. He was starting to see parts of Yukio that he'd never been shown before…

And it scared him.

Just a little.

"Incubi are fallen angels whose sole purpose, it seems, is to mate with human women and impregnate them with their children, known as Cambions…."

Renzo beamed as he leaned over and whispered in Bon's ear "If I were a demon I'd definitely…ow!" He yelped as his friend boxed him on the ear. Ryuji shook his head. "Idiot."

"…Continued intercourse over time drains its partner, eventually resulting in a very painful- "

Screech

Suddenly Izumo shoved back her chair and ran out of the class room. Yukio watched after her before returning to the book in his hand. The students looked at each other.

"Hundreds of years ago the Christian church debated its existence, as rapists would often use the myth as an excuse, making it difficult... Incubi have their own ranking system... Satan himself…."

Whack

"…may be an incubus, seeing as he is the fallen angel known as Lucifer…"

Rin rubbed the back of his head as he picked up the piece of paper that hit him. It read:

Come late again and I'll pound you. BAKA.

Rin scribbled furiously in his notebook, turned around in his chair to hold up his obscenity-filled reply. A wide eyed Ryuji read the note as Konekomaru and Renzo erupted in laughter.

The moment was short lived as Yukio grabbed the paper and crinkled it up, glaring down at his brother.

"…holy water, prayers, and magical swords " Blue eyes gleamed "are almost useless against these creatures. According to Franciscan Friar Ludovico Maria Sinistrari, incubi '…do not obey exorcists, have no dread of exorcisms, show no reverence for holy things….' So, Rin, how would you defeat such a creature?"

A bead of sweat trailed down the boy's forehead as he pointed at himself and an innocent-looking Bon.

"I…. he…Arghh"

Yukio copied his gestures. "You… me... after class."

He hated when Yukio bossed him around like that.

Just like last night…

"Just come Rin, I know you want to."

The boy banged his forehead against his desk as the heat rose to his face.

Shoot me.

"So how can we defeat them?"

"Well, by themselves, these weapons are ineffective, but if used together...there is a chance. Since they have no bodies of their own they often inhabit a corpse or form a body out of bits of human flesh…So naturally, if you destroy the body you'd get rid of the incubus- temporarily. Yes, Renzo?"

"I know this is a bit off topic, but have you noticed that Shiemi's been absent lately?"

Silence.

The twins glanced at each other.

"…yes, I have."

As everyone bustled out of the classroom, Rin sat on top of his desk, staring sheepishly at his feet as his brother leaned on the wooden desk in front of him.

Ryuji waved a fist threateningly at the half demon before his friends pulled him into the hallway.

Yukio watched his brother before speaking. "I'd like to reprimand you for your behavior in class, but seeing as this happens almost every day, I'll address something else."

Rin gulped.

"Last night…"

The elder twin automatically turned a shade of pink

"…the demon you fought was…"

He sighed in relief "…an incubus. I know."

"So defeating him …"

"I can handle it."

"Clearly you weren't paying attention in class when I said-"

"I'm not getting anyone involved! He's after me so if he wants to kill m-"

Yukio slammed his hands down on Rin's desk, pinning the boy between himself and the small table.

"Dammit Rin it was this same attitude that almost got you killed last night! "

Though angry, the half demon could hardly contain the heat that had risen to his cheeks, nor the sense of discomfort at being so close to his brother.

Or was it longing? He flushed an even deeper red.

"I can handle it!"

"You're not strong enough!"

An exasperated Rin grabbed the front of his brother's jacket and yanked him closer.

"Why did you kiss me?"

Shit. That's not what I meant to say.

He released his grip from Yukio's coat.

Silence.

"…what I meant was…"

Yukio leaned in, closing whatever gap there was left between their bodies as he whispered into his brother's red-tipped ear.

"Do I repulse you, nii-san?"

Yukio straightened and grabbed his briefcase as he headed towards the door, leaving behind an even more confused and maybe even slightly turned on Rin.

"Class is dismissed."

"I won't…I won't let you hurt Rin!" A high pitched voice weakly bounced off dank walls. Yellow eyes flashed in a dark corner.

The demon walked slowly towards the cage. He lifted the girl's chin with a slim finger. Shiemi squeezed her eyes shut.

"So predictable…"

He licked the side of her neck. She tried to struggle free but her hands were tightly bound with a chain.

"I've decided, you'll be our audience. I'll have you watch as I make your friend mine and suck all that delicious power out of that cute body of his…"

He kissed her before she could make a sound, draining a bit of energy from her. She fell against the cage floor, limp like a doll.

Xaphan smirked.

Weak.

To all my dear yaoi fans- I'm sorry for not putting any smut in this chap but I PROMISE you a VERY HOT lemon in the future, and possibly some smut in the next chapter. :D Thanks for reading!