A special bond

Emma and her sister Summer were not much alike. Summer was outgoing, Summer was a cheerleader. Summer had a boyfriend. Emma would rather read a book that go out. Emma was the oldest out of all the sisters and all of them looked alike, long dark hair and slightly Asian features. Emma finished school near the top of her class and was home on break from university. Emma was never bitter at her lack of social status or jealous of Summer. Emma knew she had some form of social anxiety disorder but she didn't mind as it didn't negatively impact her life. She listens to Summer complain about John all the time and she didn't need that drama in her life right now. She wouldn't mind John's dick though as Emma had a high sex drive and masturbated often, not to mention a few Tinder one night stands while at school when the urge came to her.

Emma gladly volunteered to stay home while her parents and her youngest sister Kate went off to see some relatives for the day. She figured she could do some reading and hang out with Summer when she finally woke up. She was surprised to see Summer smoke. Summer had told her in the past that John smoked but she didn't think Summer would pick up the habit as well. She was also surprised at Summer's appearance. She looked like a model. Whatever diet/workout she was doing, it was working. She couldn't believe her sister's breasts now. Emma thought that maybe smoking gave Summer a supermodel body and if so she should start too.

Emma was deep in her book when she heard a crash came from upstairs. Emma yelled from the couch, "Summer? You OK?" No response from upstairs. With a sigh Emma gets off the couch and walks upstairs. She sees Summer's door is partially open and she thinks she hears moaning coming from the room. Emma tiptoes carefully and peeks inside Summer's room. Emma hears the slight hum of the vibrator as Summer is naked on her bed and is stroking herself with it. The sight of her younger sister getting herself off is compelling and part of her wants to watch but common sense takes over and Emma starts to tiptoe away. She hears Summer start to moan from her bed. "Oh yeah....fuck me....yes....fuuuuck me." Emma gets to the top of the stairs when she hears....

"Fuck yes! Fuck me Emma! Lick my pussy Emma!"

Emma is frozen on top of the stairs. "Did I just hear that? Did Summer really say my name?" Emma's body starts to get hot and she feels her heart racing in her chest. Curiosity gets the best of her and Emma wants to find out for sure if her sister called out her name in passion. Part of her is disgusted by the possibility while another part...isn't.

Emma tip toes back to Summer's room. Summer's eyes are closed and Emma has a perfect view of Summer's wet, shaved pussy as the vibrator is pressed down on Summer's clit. Without realizing, Emma starts to touch her pussy. She immediately gets wet and aroused. Emma can no longer leave from the view of her naked sister if she wanted to. Emma wonders if she should just shut the door but each moan starts to make Emma want to moan as well. Part of Emma debates if she should go in the room or at least let Summer know that she's there and can hear her.

Naked Summer arches her back and moans "Emmmmmmmmma" while she orgasms. Emma starts to rub herself harder and gasps when Summer opens her glowing eyes and looks at her sister directly.

"Come in, Emma."