A/N: Prompt night last night. I seem to have developed a 'verse where Kris is Ethan's sister instead of Lyra's, and where the two girls are thus involved. Consider it a brief apology for my stories being so far and few between right now.
Learning Curves
Ethan was one wall away, watching TV. Waiting for them. Hollering even now; "Hey sis! You seen Lyra yet? I wanna hurry up and watch the movie!"
"Not yet!" she called back, only the barest tinge of hoarseness in her voice, and certainly no hesitation in her answer, despite the distraction she had pinned to that same wall.
Lyra whimpered again, bringing her own hand up to bite on her knuckle in an attempt at silencing herself. "Good," Kris whispered, smiling and giving her cheek a soft kiss that served as stark contrast to the motion of her fingers, "you're learning."
She let out a little squeak even through her hand, causing Kris to chuckle lowly.
Both girls were on their knees, Lyra bent slightly backward so that her shoulders and head joined her toes against the wall. She was also naked from the waist down, her pants left somewhere near the door, leaving her exposed to Kris's will. The older girl ran her fingers along her entrance, teasing her folds in frustratingly random patterns, barely dipping far enough into her to justify it being considered inside. Her refusal to neither fill the quivering brunette's pussy, nor pay more attention to her swollen clit than the random brushes of her palm afforded, was deliberate and a test of the girl's patience.
Lyra had always idolized her best friend's older sister, going so far as to copy her hairstyle and choice in starting pokemon, and whenever she wanted to learn something new she came to her first. Most people would consider this sort of sex ed to be unconventional, but Lyra was a hands on learner, and Kris was a hands on teacher…
"And then like this," Kris whispered, giving the younger teen's clit a firm pinch that made her squeak through her knuckle again. "Think you can handle that?" she added, pulling her fingers back and drying then on Lyra's thigh before reaching to unfasten her own pants.
"Y-yes," she nodded, her breathing ragged, her withdrawn finger now bearing deep impressions of her incisors.
"Good. If you're fast enough, maybe we can fit in a little oral before he decides to call to ask where you are."
As the first trace of Kris's wetness reached her fingertips, Lyra couldn't help but hope they'd have that time. The alternative - trying to get through a whole movie with this much anticipation built up inside her - sounded like a bigger challenge than she was up to just yet.