30 Days : Yukio Okumura

Day 1 : Solo

" You must be joking. "
" I'm afraid not."
Rin let his head fall towards his chest with an exaggerated sigh. "Why me?"
" Because you were the one who somehow managed to burn up my entire stock of pharmaceuticals. Therefore, you will be the one to replace them." Yukio replied, paying no mind to his brother's protests.
"Fine. Do I have to now-"
"Now. Nii-san."
With another sigh, Rin begrudgingly grabbed his jacket from the hook and headed out the dorm room door.
Yukio breathed a sigh of relief. He could very well have replaced the herbs himself, but admittedly, he wanted time on his own, for once.  He leaned back in his chair, rubbed at his aching temples, and let his hands fall into his lap.  He closed his eyes for a moment, to rest them after staring at his notes for god knows how long.  As his mind began to wander, he recalled a conversation from earlier that week.
"It's not good for ya, ya know?"
Shura had muttered to him.
"Too much stress and no way ta' ... Let it out."
He knew full well what she was implying.  He found it almost humorous that she assumed he was so uptight and innocent that he had never touched himself. As though he was still a young catholic boy who was afraid of masturbation.  The reality was, he did. As often as he could find the time. Granted, it really wasn't that often. Usually in the shower, when it was convenient and he was sure he wouldn't be interrupted. 
Behind his closed eyes, his mind started to wander further. 
Why was Shura so insistent on bringing that up so often?  It may well be due to her constant intoxication and perverse attitude, but what if it wasn't?
His hand slid, gently, along his thigh.
Even if her alcohol was to blame, he was still in her thoughts. Did she picture him doing this?
His fingers crept to the zipper of him pants. He slowly un-did them, running a thumb gently over the fabric of his boxers.  His heart began to race. There was no telling when Rin was going to return from his errand, but Yukio felt the blood rushing to his abdomen and couldn't bear to stop. He lifted himself out of the chair slightly, readjusting his trousers so they sat lower on his hips. With timid fingers, he slowly slid under the elastic of his underwear.  He couldn't even remember the last time, and his own body felt alien to him.  He stroked , slowly at first, feeling himself grow harder.  When it became too much for him to handle, he pulled out of his boxers, and left himself further exposed. There would be no chance of hiding it if Rin were to walk in on him now, but Yukio found that fear of being seen was pushing him further towards his limit.  With heavy breaths, he stroked faster. Pausing every so often to run a thumb over the head. As he found himself drawing closer, his breaths littered with irrepressible groans, he picked up speed. Gripping himself with his whole hand and making an almost embarrassing amount of noise, he finally felt a wave flow through him. His legs shook and his abdomen tightened as he came, frantically catching the seed in his hand. 
He laid back in his chair. Using his clean hand to replace himself properly in his boxers. As he heard the door begin to open, he jumped from his chair and ran hurriedly towards the bathroom.
"Whoa! Everything okay , Yukio?" Rin asked as the bathroom door slammed.
" I'm fine, Rin, just- just leave the groceries on my desk!" He called, his voice still slightly shaking as he ran the tap over his hands.