It was a beautiful summer evening as I made my way back to my house. It had been a really long day and I was so relieved to finally be heading home. I knew my parents weren't there today so I would practically be alone. I say practically because there was one other person. Izaya... my annoying, disrespectful, egotistical twin brother who never ever left me alone no matter what I did. But worse than that was his long-time girlfriend who was just as bad as him. She had the kind of cold loveless aura that I absolutely hated. Snapping out of my revery I dug through my pockets for my key and inserted it into the door. It opened with a click and I stepped into the hallway. For the first few seconds I couldn't believe what I was seeing. There was Izaya, shirtless, on the couch, Namie kneeling over him with her fucking tongue down his throat and her hands in his PANTS. I wanted to throw something. At least until my eyes got caught on the toned muscle of his chest, his slim frame, his flushed cheeks. I couldn't help but wondered if he looked like that while having sex. How it would sound to hear those beautiful rosy lips crying out my name as I... My eyes widened in shock. Had I just really thought that? What was wrong with me? He was my brother, my disgusting manipulative TWIN brother. I was going insane, there was no other explanation for it. I grabbed the vase adorning the little decorative table next to me. Out of reflex and without any real consideration I hurled it at the black haired girl currently nibbling on my brothers lips. I had to get a grip of myself. The vase shattered worthlessly against a wall but it did it's trick. Namie's head snapped up, a bewilderment showing on her face, quickly vanishing to be replaced by a look of utter contempt. Izaya just licked up the saliva trickling down his chin and rolled his eyes that familiar emotionless smile spreading across his lips. God why did he look so hot?
"What the fuck is your problem?", she snapped. Yes, what was my problem? Why did I keep thinking about my brother, my own brother, twin brother no less, like this? However just for a second I regretted not smashing the vase against that annoying girl's head.
"Really Shizu-chan is that the best you can do? Your just jealous you can't get any."
Izaya's voice finally caught my attention, though it didn't do much to calm me down. I couldn't get any. Was he serious? I practically had people at school throwing themselves at me. Problem was I didn't want "any". From anyone. At least until now. I could feel heat flowing to my lower regions and knew I had to get out of there right now.
"Never call me Shizu-chan ever again or I will make you regret it?", I snarled and stomped up to my room. I could still see Izaya's smug face and his obnoxious grin. But what was even worse was that I could still picture his flushed face with his eyes half lidded in bliss. I groaned in annoyance and turned on the shower. Feeling the warm water run over my body didn't help sooth my growing erection and with a sigh I slid down the wall wrapping my hand around my cock. Slowly I started pumping my hand up and down, up and down. But nothing was happening. It felt good, sure, but it just wasn't enough. I heard the front door slam and shortly after that the second shower running. I could imagine beads of water running through Izaya's hair, down his chest, along his well-toned abs, down to his groin, fully erect and dripping. My hand jerked violently as I neared my climax. Izaya's skin looked so soft, I wanted to reach out and touch it, wanted to trail kisses down his neck, to his collar bone, let my hands roam down his body spread his ass cheeks. I came right then and there. Come splashing across my chest immediately getting washed off to collect on the bottom of the shower floor by the steamy water. Only now did my eyes widen in realization. I had just done it to the image of my brother, naked, wet and needy. I had a serious problem here. Anger bubbled in the pit of my stomach and for once it wasn't aimed at Izaya, but at myself. I switched the water to icy quickly, yet it didn't help.
"What the fuck is wrong with me? What am I doing?", I screamed. Groaning loudly I smashed my hand into the wall, tiles splintering and blood dripping down my arm. I had hoped it would make me feel better and it actually did. The stinging pain radiating through me, washed away more of the disgust than the water ever could.
A/N: hi there, this is my first fic, so don't be mean. Also I actually haven't finished the durarara anime or the light novels so I apologize in advance for Shizuo and Izaya being out of character. Anyway I thought I'd try this but everyone is welcome to fill it too 'cause I'm not sure I'm going to continue. So tell me if you liked it and I might make more...