The few days following Gemma's orgasmic experience with her sisters, her body felt incredible. It was like she had no sores, no pain, nothing at all. And perhaps best of all, every time she touched her pussy she felt a tingling sensations inside of her.
A week passed by, and finally she couldn't help herself, she had to have more. Her parents were once again out of town, leaving just her, Lily, and Heidi. Her sisters hadn't said anything specific to her about what had happened, but they gave her mischievous smiles and winked at her. She decided that it was time to return the favor, so she met with her twin, Lily, that afternoon.
Gemma blushed as she told her twin her plan, but she was excited to see what she'd think. And Lily loved it. "Wow, sis, look at you!" She smiled. "Acting like a sexy little girl now."
And so that night they waited until their little sister, Lily, was sound asleep. She wore only a sleep shirt and panties, and she was a very sound sleeper, which made their job even easier. As soon as she'd been dozing for 15-20 minutes, they both snuck in to her room silently. They carried some rope and lots of toys with them as they crept closer to her.
It had been decided beforehand that Lily would deal with the bottom half of Heidi, and Gemma her upper half. So while Lily took off her covers and slid down her panties, Gemma got to work by raising her arms and sliding her shirt off her head. Once she was completely nude, Lily tied her feet, one to each bedpost, and Gemma did the same with her hands. Then, once she was fully secured, they began to touch her body.
It didn't take long for her to wake up, as soon as Lily gave her a kiss on the lips, her eyes fluttered awake. Her face changed expressions several times in the next few seconds as she tried to understand what was going on. Then she tried to move her body and realized she was tied up.
"Lily? Gemma?" she asked groggily. "What's going on?"
Lily smiled at her and placed a hand on her breast. "We're going to pleasure you, dear, for a few hours or so."