He gives his sister a bath

Mason turned on the shower. The water sputtered for a second then came out steady and warm. He adjusted the temperature until it felt right, then aimed the showerhead so the spray could hit her.

Water started hitting Serena’s beautiful body. It cascaded over her long jet-black hair, making it darker and heavier as it clung to her back and shoulders. Streams ran down her spine, over the curve of her wide hips and between her thick thighs, washing away some of the piss. Her massive breasts took the water directly, the heavy flesh bouncing slightly as droplets hit them and rolled off her stiff nipples.

Mason stepped into the shower with her, still fully clothed except for kicking off his socks. His t-shirt and jeans were going to get soaked but he didn’t care. He had to do this. He found his hand trembling as he rubbed her thighs and legs, trying to wash the piss away. His fingers slid over her smooth, wet skin, feeling the firm muscle underneath. The water mixed with the piss and swirled down the drain. He kept his touch as clinical as he could, focusing on her calves and knees first.

But despite the bizarreness of the situation, he was getting hard. His cock was thickening inside his wet jeans, pressing uncomfortably against the fabric. Serena’s hair was now wet and dripping, long black strands plastered to her back and hanging in front of her face. She looked… ****. And completely obedient. Every time she shifted, her heavy tits swayed under the spray, water running in rivulets between them.

He struggled a lot to not have sexual thoughts. This was his sister. The girl who had protected him growing up. The one who spoiled him with gifts and late-night talks. But his eyes kept tracing the way the water ran over her hourglass body, how her ass cheeks flexed when she adjusted her position on all fours, how her pussy lips still looked puffy from earlier. He grabbed the loofah from the shelf and started scrubbing her back and legs with it, trying to focus on cleaning and nothing else.

Serena kept mooing slowly under the water, low and rhythmic, like she was content now that she was being washed. The sound echoed off the bathroom tiles. Mason’s hands moved over her sides, then down her thighs again, the loofah scrubbing away the last traces of piss. His cock was fully hard now, throbbing and he hated himself for it. Every moo she made sent another unwanted pulse through him.

He was almost done when he suddenly heard the faint sound of a few notifications from Skype on the laptop in the bedroom. The pings were soft but clear enough through the closed bathroom door.

Mason paused, water still running over both of them. He was feeling hopeless. Nothing he had done so far had brought his sister back. Shaking her, talking to her, dragging her, none of it worked. But those messages might have the answer. They had to.

He turned off the shower. Water dripped loudly from Serena’s body onto the tile floor. She stayed on all fours, wet hair hanging, massive breasts dripping, still mooing softly every few seconds.

“Wait here,” Mason said, even though he knew she probably wouldn’t understand. He stepped out of the shower, clothes soaked and clinging to him, and rushed back to the laptop, leaving wet footprints on the floor.

He sat down quickly, still dripping and clicked back into the Skype window. The laptop was connected to the internet now. After the call had disconnected, the guy had tried calling back a couple of times. There were missed call notifications and short messages checking if she could read him.