Sasuke blushed heavily at the sight of his brother's pale perfect skin, muscled lithe body and dark eyes that were filled with an even darker emotion that made the hairs of Sasuke's neck stand on end. There was a moment when Sasuke felt like Itachi was the predator and he the prey, but he stifled the urge to run away. This was Itachi, his aniki, and he would always be there to protect him.
Itachi turned on the water and stepped in. He then gestured for Sasuke to join him. As always, Sasuke did as his brother asked. He winced as the water hit him a little too hot. Itachi saw this and adjusted the water.
"Now, then," Itachi said. He picked up a bar of soap and a wash cloth, motioning for Sasuke to turn around, which he did. Itachi lathered the cloth and began to wash Sasuke. It wasn't particularly gentle or soft, that wasn't Itachi's style, but Sasuke thought of Itachi not doing it at all and the thought hurt more anything else so Sasuke kept silent. Itachi was thorough and when he was satisfied, Sasuke's entire body tingled. To Itachi's surprise, Sasuke was partially hard by the time Itachi started washing his hair.
In contrast, Itachi was almost loving in the way he washed his brother's hair. He was mesmerized as he watched the soft ebony strands slide through his white fingers. He sighed, combing through the dark curtain with his fingers, finding a comfort in this activity that he didn't allow himself to examine too closely.
Both of them were fully hard when Itachi was done. Sasuke almost complained when Itachi stopped but then stopped when he realized it was now his turn to wash Itachi. He made to turn but before Sasuke could open his mouth, Itachi let out a growl and nipped his ear.
Sasuke squirmed, the sound going down to his groin. Part of him was disappointed, he had always wondered if Itachi used shampoo to make his hair smell so intoxicating. He found out his answer, which was as frustrating as it was predictable; no, it was purely Itachi's scent that made Sasuke feel heady.
Itachi took two big towels and handed one to his brother. He wrapped one around his waist and waited for Sasuke to do the same. Itachi held out his hand. "Come, Outou." It was a demand Sasuke was all too willing to obey.
Flushing, Sasuke grabbed onto his brother's hand like it was a lifeline. He nodded his acquiescence. "'kay, 'Tachi. Show me how you do things with our cousin."
Oh, Itachi would show him all right. With mock patience, he led his brother, his flesh and blood, across the threshold to his bed. It would be simpler this way, without the hassle of clothes. Truthfully, Itachi usually had sex with Shisui with most of his clothes on, but he wanted to do it properly with Sasuke.
Itachi was sure that his new game with Sasuke would become a regular favorite; there was no need to rush. Itachi would make Sasuke scream in a delicious combination of pain and pleasure, but later. For Sasuke's first time, Itachi wanted to be gentle.
Shisui might have to go seek attention from the kitsune, Itachi thought ruefully. A gentle tug on his hand reminded him of just who he was with and what was going to happen when the towels came off. Itachi smirked, why wait? One clever move and both Itachi's and Sasuke's towels fell to the floor. Itachi's eyes had unknowingly become red. Much, much better.