So, y'know, my other Ao no Exorcist fanfiction is pretty (really) depressing, and I just wanted to balance it out with some romance. And before you read this chapter and start to get ideas, no, this is not a RinxYukio. It's gonna be a RinxShiemi. Yes, it's rated M for some, ah, stuff later on. No lemons, but some implied sexy stuff. ;) So, just thought I'd let you know. Still going to work on Self Inflicted, but this isn't a one-shot either. It's gonna be a chapter story too. I'll work on both as much as I can. :) Okay, enjoy!

It seemed like it was going to be a normal day. Yukio was going to have to drag Rin out of bed, force him to get into his uniform and go to school, then he'd have to scold him for being late to Cram School again.

Just a normal routine.

That's what Yukio's thoughts were as he went to sleep, that early spring night, trying to fall asleep all the while listening to Rin's unbelievably loud snoring.

But that's not what Yukio got the next morning.

In fact, it was quite the opposite, it seemed.

Yukio sat up in bed that morning, rubbing the sleep out of his eyes and yawning. He'd been woken up by an odd shuffling in the room. He squinted at the moving figure across the room, but without his glasses-plus the fact that he'd just woken up-his vision was terrible. He could have sworn Rin was up and moving, but his brain must have been playing tricks on him. Rin was never up this early.

He picked up his glasses from his nightstand and put them on. He yawned again, wondering what the unfamiliar noise was, and took another look across the room. Maybe Kuro was playing with a plastic bag or something?

His eyes went wide.

Rin was wearing nothing but a pair of loose dorm pants, and he was rubbing his hair dry with a towel. Had he just taken a shower? Really? Before Yukio even woke up? He looked over as he heard Yukio stand up. He grinned.

"Morning, Yukio! I'm just about to make breakfast. I'll be a few minutes though." He greeted his twin. He walked over to his chair and picked up his uniform, which he'd carelessly draped over the back of the chair, and sniffed it. His nose wrinkled and he looked at Yukio again. "Do we have a spare uniform that's clean? This one's dirty."

Yukio blinked and nodded, dumbstruck. "It's... it's in the laundry room. Don't forget to-"

"I'll put the dirty one in the laundry, don't worry." Rin finished for him. He left the room with the dirty uniform and left Yukio, stunned and dead still, in the room alone. He cleared his throat and shook his head.

"He's... he's probably just a bit sick... I'll have him check his temperature when he gets back." He looked again at the other end of the room and gasped, shocked into silence once again.

Rin's bed was made perfectly, and his school bag was hanging from the bedpost. He walked over slowly and, shaking, he looked inside the book bag. All of his stuff was in there, all his books, school supplies, everything for his high school classes.

Yukio was worried now. Rin had never been this responsible or prepared. He'd never thought his uniform was dirty, Yukio would have to force him to clean it once he started smelling. And he'd never gotten up this early without Yukio making him get up. This was strange.

Yukio got dressed and made sure he had all his stuff ready before heading downstairs, wondering why Rin hadn't come back to the room yet.

He was met by the smell of rice and miso soup. That was the breakfast Rin usually had time to make, and it was there, like normal, sitting on the table waiting for him. Rin was just finishing his food and was just standing up to put his plate away. He smiled at Yukio when he entered the room and put his plate into the sink. He pointed towards the stairs and said, "I'm just going to brush my teeth and get my stuff, 'kay? You don't have to wait for me." He began to make his way to the stairs, but Yukio grabbed his wrist.

"Nii-san, are you feeling alright? Sick, maybe?" He asked. Rin shook his head, looking confused.

"Nope. I feel fine, why?" He questioned, an eyebrow raised. Yukio shook his head and sat down at the table in front of his breakfast.

"It's nothing. You go ahead and get ready, you'll probably be out before me though." Yukio replied, taking a bite of his food. He listened as Rin darted up the stairs, obviously in a hurry. Yukio frowned. He was wondering if there was something that was wrong, Rin normally didn't act like this. He didn't look sick or anything, but still... He shrugged. He'd figure it out later. Right now though, he had to calm down and not worry. He had a test in school tomorrow, they both did. He couldn't afford to be stressed today, while he studied.

He heard Rin dash back downstairs and he looked behind him, only to see a quick blur of his brother as he made his way to the door. Why was he in such a hurry?

"Bye, Yukio! See you at school!"

"Bye, Nii-san, have a nice...day?" He finished as the door slammed shut behind Rin. Yukio sat there, stunned. He rolled his eyes. "He's going to be fifteen minutes early for his first class... what is he thinking?" He muttered and turned back to his food.

Yukio sighed as he walked out of the school building, thanking the world that it was lunch time. He'd just gotten out of a two hour study period, for the test, and he was exhausted. He'd been trying to keep an eye on Rin whenever he could, but whenever he caught a glimpse of him, he was either studying hard or eyeing the girls around him.

He sat down on the bench he usually sat at and opened his bag. He took out his bento that Rin had made the night before and opened it. He was about to start eating when he heard a laugh. He looked up, startled. That laugh... it seemed like it should be familiar, but it wasn't. It was so...

Yukio's jaw dropped.

Well, this wasn't a scene he normally saw, and now he knew why the laugh was and wasn't familiar at the same time.

It was Rin...

With three girls crowded around him, and he was acting strangely. He was more composed, he was less silly and frantic, and he wasn't flustered at all. All of these things were so not Rin. Yukio frowned. He was really worried now. Rin was either up to something, or he was being influenced by something. Both were bad. He had a bad feeling about this. He didn't know why, but he had the feeling that something was going to go wrong.

"Ah! Yukio!"

Yukio snapped out of his thoughts by his brothers voice. Why was it deeper than normal!? He had literally changed overnight! And was he taller? He mentally kicked himself and told himself to pay attention. His brother called him, respond. He smiled.

"Hello, Nii-san. How was last period?" He asked nonchalantly. Rin walked over, waving good-bye to his new admirers. He grinned and gave Yukio a thumbs up.

"It was great! I got a lot of work done. Should I even bother asking about you?" He joked. Yukio nodded. Why wasn't Rin bragging about the girls? That would've been a very Rin-like thing to do. Yukio pushed the thought aside.

"Well, I got a fair amount of studying in as well. I'm glad to see that you're working hard, Nii-san." Rin nodded and was distracted by a girl from his class walking by. He seemed like he had been about to answer, but he seemed caught up in the way she walked. Yukio stared in shock. Rin's eyes held an emotion that Yukio had never seen there before. They glinted and his pupils dilated instantly. Yukio had seen it before in the older boys in the school.

Lust.

Yukio raised an eyebrow as Rin snapped out of the apparent "trance" and quickly said good bye to him. Yukio watched as he ran up the the girl and started walking beside her and started talking, earning a giggle from the flustered girl.

Yep, Yukio was convinced now. Something was up with Rin.

And he had a feeling it had something to do with his heritage. He didn't know why, he just did.

He was going to have a talk with Mephisto.