The shower.

Lindsay quickly hopped off her bed, pulling the front of her pyjama bottom open, inspecting herself. She couldn’t see or feel anything unusual as she felt around her pussy. She tried contemplating what is was she felt. Was it a bug, or was it just her mind playing tricks on her. But then, that sensation of being tickled wasn’t imaginary.

After a few moments, she shrugged it off. She looked at her clock, noticing the time. “Better go to the bathroom before I go to bed.” She said to herself, as she exited her room. She walked down the hallway, approaching the bathroom Sarah was still in, the sound of the running shower still going. Lindsay was pretty lucky in the fact that her and Sarah didn’t mind using the bathroom at the same time if it was needed. The two were closer then most average sisters, having the same group of friends, probably helped.

Lindsay walked in, closing the door behind her. “Don’t worry. Just me Sarah.” Lindsay said, moving over to the toilet. “Alright.” Sarah replied from behind the shower curtain. Lindsay pulled down her bottoms, sitting down on the toilet to relieve herself. As she sat there, she glanced over at the shower, her mind beginning to imagine what Sarah looked like behind those curtains. She shook her head, shocked, wondering where that thought had come from. But before she knew it, more thoughts began to swirl around her head about her older sister.

She smiled to herself, imagining her naked, soaping up her body in the shower. Her skin glistening from both the water and soap that dripped off her. Lindsay felt her heart flutter, her mind trying to both rationalize these thoughts, and process these new urges going through her.

Lindsay then kicked off her pyjamas and panties that laid at her feet, then pulled off her top, making herself completely nude. She slowly stood up, still trying to decide if what she was about to do was a good idea. But she just couldn’t seem to fight off what she was feeling. She got up from the toilet, quietly making her way over to the back side of the shower, on the opposite end from the shower head. As gently as she could, she pulled back on the curtain, and peaked in, seeing Sarah with her back to her, her body almost just as she invisioned. Sarah was lathering herself with soap, her skin smooth shines from the soap and water.

As quietly as she could, Lindsay stepped in, her heart rate going faster and faster with excitement as she realized she was really doing what she was going to do. When she was finally in, she remained still for a moment, deciding if she really wanted to do this. Her mind screamed out yes, as she stepped behind behind Sarah, then in one move, quickly wrapped her arms around her, pulling her in close, so that they were pressed tight together. “Guess who?” She teased, feeling Sarah’s ass almost push into her waist. “Lindsay? What the hell!” Sarah said in a shocked tone.

Lindsay just giggled, as at that moment, a single droplet emerged from her pussy, quickly making the leap onto Sarah’s ass. It quickly moved to her crack, sliding straight down the centre, over her hole, disappearing into her pussy. Sarah let out a giggle as well, only a two seconds after Lindsay’s giggle. “I just wanted to get close to my big sis.” Lindsay replied, as she moved her hands upward, grabbing Sarah’s boobs, gently playing with them as she enjoyed how slippery and wet they felt.

Sarah remained quiet for a minute as she felt her little sister fondling her boobs, gently rolling them in her hands, pressing them together, and massaging them, causing a build up of soap that made them more slick and slippery. “You, just took me by surprise.” She said, her thoughts and feelings now feeling very conflicted. “Need a hand cleaning?” Lindsay asked, her hand lathered up in soap, as she brought it down to Sarah’s pussy, rubbing the soap in as she stroked her hand back and forth.

Sarah moaned, as Lindsay’s busy hands went to work on her. Her mind swirling in thoughts. She knew this was wrong, but it also felt so right. Lindsay then pulled away a bit, lathering more soap in her hands, then began to rub it into Sarah’s ass. Lindsay just sighed. Her sisters ass felt as soft as a pillow. “I think you missed one spot.” Sarah finally said, as she grabbed her ass, spreading it open just a bit.

Lindsay just smiled, as she stuck her hand into the crack, making sure to really work the soap in. A dirty thought then crossed her mind. As she stroked her sisters ass, she curled her middle finger just a bit. As soon as it made contact with her whole, she slipped it in, feeling the sphincter grip tightly around her finger as she did. She wiggled her finger up and down a bit, causing Sarah to squeal a bit as she did.

Lindsay then pulled out her finger, cleaning it with soap before rinsing it under the water. Sarah finally turned around, displaying her whole front side to Lindsay that made her water. She had always felt slight jealous by Sarah’s body. Sarah had the bigger breast, where she was maybe just a bit smaller. But tonight, she didn’t care about any of that. She noticed Sarah’s eyes travel up and down her body, making her blush as she realized this is the first time they had seen each other naked in years.

“Lindsay, I....” Lindsay placed her finger on Sarah’s lip, making her stop in her tracks. Lindsay then pulled away her finger, as she and her sister leaned closer to one another, licking their lips, their hands snaking to each others rear for a feel. Finally, their lips met, as their tongues worked into each other’s mouth.