Just trust me for a second...

Your cheeks reddened as you felt the blood rush to your face; Crystal was speaking but your ears were certainly not picking up any noise. A faint muffle was the only thing that registered, as you tried with no avail to look at her mouth and make out what she was saying.

Finally, the sound returned as your face returned to its' normal color, and a final few words were emitted from her with crystal clear clarity.

"...Just trust me for a sec. I promise this will help." About to speak, you were interrupted with your sister getting up and walking into the kitchen; you noticed that her opaque blue underwear was once again swallowed up by her ass; each dimple creating a small wave with every footstep. Nearly caught in a trance, the feeling you two had shared in the shower picked up, a slow ember that was once again awakening from dormancy.

Crystal rummaged around the kitchen cabinets for a few seconds; amidst the small curses of her inability to find something, you sat on the sofa, words still on the tip of your tongue, almost ready to be blurted out - 'What did you say, Crystal?' Yet you were absent for any speech; instead, lost in your thoughts about what had happened last night and this morning with Lisa. The thought of her coming back from the gym in an animalistic frenzy, the thought of her frank words before she left, the thought of her veiny, plump cock coming to life once she grabbed you; the thoughts made the hairs on your neck stand at attention, catching every subtle breeze in the house and coating it with a forebodingly lewd anticipation.

"A-ha! Found it." Your thoughts were cut short by Crystal suddenly appearing in front of you in a whir of blue hair, sporting a piece of cloth in one hand; although at the current angle, and her complete disregard for personal space, her crotch was in the limelight. Her black tank top had snaked its' way up to her bra, revealing a soft, yet tight stomach, and a diamond-studded belly button ring staring back at you. Letting your eyes quickly wander down, before looking up at your sister, you noticed the fabric of her underwear shifting ominously. Once again, the low fire that you had felt began to tingle around your feet, tantalizingly. Crystal looked down at you with a lecherous grin, her hazel eyes seeming as if they were sparking a number of ideas. Crystal reached down and tousled your hair, generously soaking up the lust that had been slowly collecting around the two of you like static electricity, before leaning down to your face with the same lustful precision that she had done in the bathroom. The rest of your house was silent once more, aside from the thunderous beating of your heart as Crystal ran her fingers through your hair, her face only inches away from yours.

"Just. Trust. Me." The freckles around her nose scrunched up one more, as she smiled, before biting her lip and placing the cloth in your hands.

"Put that around your eyes." Crystal erected herself so that she was once more staring down at you.

"My eyes?" You looked at her, quizzically.

"Yes, Doug. Your eyes. This is all about feeling, so we're going to do something a little different... By the way, I saw you staring at my belly button ring. If you tell mom, I'll kill you."

Crystal's expression changed as she raised her eyebrows, doing her best to peer through you; as if to drill her point home. The exchange between the two of you on the sofa felt surreal, as if it was artificially created by the same energy that had visited you two back in the bathrooms. Regardless, you decided to listen to her. She was your older sister, after all; she was a free spirit had been around the block and learnt a thing or two - or, at least, that's what Lisa had said to you and Sarah over dinner whenever Crystal made some outlandish comments, or came to the dinner table in her birthday suit.

You put the cloth over your eyes, and flimsily tied the ends together. The hairs on the back of your neck stood up once more, although this time it was stimulated by your sensing that Crystal was staring at you, without knowing where she was or what she was doing.

Crystal huffed; equal parts exasperation and amusement, or so you assumed. She put her cold hand to your face, rubbing her thumb along your cheek in a circular, affectionate fashion and kneading it lightly.

"Oh, Dougie. You tie a shitty knot." Crystal laughed, before quickly undoing your knot and retying it, finishing her work off with a satisfying tug of the fabric. Crystal’s speed in tying knots had never occurred to you, but the deftness and accuracy of her blindfolding had created a different knot; this one in your stomach. Your thoughts spiraled into how she became so skilled in the first place, but was quickly interrupted by Crystal cheekily tapping your face with her hand.

"That's better, now you can't see anything." Crystal was right. Your eyes were completely shut off from the world, although you were still comfortable in the atmosphere of your living room. The space felt colder without being able to see, and your ears picked up on the silence of the house even more, now that your sight was out of the picture. Crystal's rhythmic breath became more apparent, and her warm presence was a stark contrast to the void feeling that permeated the rest of downstairs. Although you couldn't see, you felt her edging closer to you; the shuffling sound of fabric, and a quickened breath - or was your mind playing tricks on you?

"Just relax, Doug. Use your senses, feel everything you can." Crystal's voice was soothing, but tinged with an air of clinicality, almost as if she was trying to hypnotize you. Trying to clear your thoughts, your heart began to beat in your throat once more.