Hello m'loves! There's never enough Isshuken in this world. And it just so happens to be one of my favorite Bleach pairings too~

This is an AU fic, I do not own the characters, this will be a three-chapter story. Fun, fun~

Enjoy lovlies!

Ryuuken groaned at the wailing that carved through the air from the bathroom. The screeching sounds came in bothersome highs and lows. Sometimes the sounds resembled something like a dying horse. Other times it sounded like a dying whale. Mostly it was just plain annoying.

He called it 'singing'.

Ryuuken groaned and slammed his hands over his ears as his obnoxious roommate and future colleague (perhaps) sang loudly along with the radio whilst in the shower. Honestly, could that man get any more annoying? How could he hope to concentrate on his studies in this atmosphere? It was damn near impossible to read. He found himself going over the same paragraph three times.

A high-pitched cry rang in the air as his roommate reached the climax of the song. Ryuuken's eyebrow twitched and he stood, briskly walking to the bathroom door. He slammed his fist hard on the door, and he heard something fall to the ground(It was light, a toothbrush, perhaps?), so he knew he must've startled him. The singing also ceased.

"Would you mind being a bit quieter? I have a very important test tomorrow and I need to study." He didn't bother to mask his annoyance. He raised an eyebrow as the radio was shut off. The door swung open, and his roommate stood there, digging a Q-tip in his ear.

"Eh, what did you say?" Isshin asked coolly.

Ryuuken didn't answer. He was too busy trailing his eyes up and down the man's toned torso, still damp from the shower. He watched as a bead of water slithered down his chest and between his abs, sliding down past his belly button and was caught by the towel hanging loosely at his waist.

His small, small towel.

"Oi, my eyes are up here, Ryuu~" Ryuuken's head snapped up to meet playful brown hues. He tried so hard not to notice the small strands or hair that hadn't been brushed into place yet, or the water droplets that dripped down to begin their journey to his nether regions. He cleared his throat and turned to walk away.

"I'm more than aware of the location of your eyes, Shiba. Now if you don't mind, be quiet. I'm trying to study." Before even a single step could be taken, a heavy arm casually draped itself around his neck, Isshin's head resting lazily on his shoulder.

"Lighten up, Ryuu. You know you love my singing. Laaaa~!" Ryuuken cringed at the attempt at a musical note, his irritation growing. He pulled away from the larger male, trying desperately to get out of his iron grip.

"Get off of me, you're wet! And that was a horrid attempt! Could that even be classified as singing?" Isshin's grip on him only got tighter.

"Ah, so cruel, so cruel!" He laughed loudly, spinning Ryuuken out of his arms while pushing him away, causing the poor white-haired man to stumble into the desk he was previously sitting at. He glared back at Isshin as he walked away, adjusting his glasses. But that expression quickly faded as he watched with more than subtle interest at the muscular back and the dimples that disappeared under the towel. He couldn't break from this trance until Isshin had disappeared behind the door of the bathroom.

"Idiot," He breathed.

Plopping back down at his desk, Ryuuken let out a heavy sigh, running his hands through his hair. God...this is ridiculous. Why must he flaunt himself in his towel like that? He couldn't concentrate with him singing, but withthis in his head, his attention to his studies is even worse! He'd never seen Isshin so... exposed before. That perfect body... His hair...he wanted to run his fingers through it. And that smile. What would it be like to be kissed by that smile?

Ryuuken's eyes widened, startling himself with his own thoughts. W-what?! Kiss...him?! He would laugh aloud if it wouldn't make him look like he had completely lost it. He hated him! Sure, he was a medical genius and one of the nicest people on campus, but he was obnoxious and clingy. He didn't have time for someone so childish! And he had a girlfriend! So it wasn't like he was attracted to men or anything... He groaned, burying his face in his hands. Since when was he attracted to men? It all happened so suddenly...

"Oi, Ryuu!" Ryuuken jumped to attention at the startling voice, turning in his chair to look back at Isshin, who was now fully dressed. He narrowed his eyes, allowing his cold, harsh wall to return to it's rightful place. Between Isshin and himself.

"What do you want, Shiba?" He sighed, "I'm still very busy." Isshin suddenly stuck his index finger out towards him, as if accusing him of something. Ryuuken blinked slowly, less than amused at this theatrical performance.

"Ah! There it is! You work too much, Ryuu! You and me are gonna go out tonight!" He beamed, obviously proud of himself.

Ryuuken arched his elegant brow quizzically. Like...a date? No...it couldn't be. An outing. Yes. That must be all it is. And outing with friends. Male friends. Alone somewhere. Where anything could happen. Where everything could-

No! Absolutely not! Ryuuken turned back to his books, trying to force the blush off his cheeks.

"I'm afraid I'm far too busy to engage in your...shenanigans. Go play with Masaki or something." He wanted to say yes. He wanted to go with him more than anything. But...they were so different. It was almost appalling that they were such opposites. On occasion, they'd smoke cigarettes together (pretty much the only campus rule Ryuuken would break), but that's the only thing they had in common. The casual exchange of lighters and cancer sticks.

A large hand found it's way smack on top of Ryuuken's head, the weight and slight force causing him to hunch slightly. Isshin bent over to grin in his face. It was quite obvious he wasn't about to take no for an answer.

"Shenanigans, huh? I'm hurt, Ryuu." He said humorously, "Going out for a few drinks with a close friend is nowhere near 'shenanigans'." Ryuuken was actually...touched. He thought of him as a close friend? But instead of voicing it, he scowled and looked away.

"Tch. We're not close friends. Or even regular friends." Isshin just laughed, walking towards the door to leave. Most likely to meet up with Masaki. He ignored the tinge of jealousy that surged through him.

"Alright! So we'll leave at nine!" Isshin groaned.

He didn't want this. He didn't want to go out for drinks. He's a smoker, not an alcoholic. But that's not even the problem. It's the fact that he's going with him. Isshin Shiba. His roommate. The taken man he fell way too hard for.

"Yeah..."

Once he heard the door shut behind him, he closed his textbook, deciding it was time for a shower of his own. Grabbing clothes from his drawer, he made his way to the bathroom. He inhaled. It smelled just like him. He closed the door and turned on the shower, pulling his shirt up and over his head. He was obsessed. He was disgusted with himself.

"Tch...damn Shiba...how dare he..." He was getting even more annoyed with himself. Now he was blaming him, as if it was his fault he fell for him. Pitiful, Ryuuken. You're utterly pitiful. Well...he supposed it could be his fault. No one told him to be so attractive. And kind. And cheesily amusing... Ryuuken groaned again, leaning against the wall of the shower and clutching at his chest. He didn't stand a chance with Isshin. His heart was taken. He's just some roommate he's going out to drinks with.