David paced about his room in relative darkness; he had not bothered turning the lights on when he entered nor to change into a pair of boxer shorts. The gibbous moon just rising over the horizon reflected more than enough light through the open curtains for him to clearly see everything in the modest bedroom.
He traveled back and forth from the closed door leading out into the hallway. He would consider opening it and perhaps go looking for his sister, but always decided against it, and promptly turned around. He walked past the narrow twin bed and would stop at the window, pausing to look down at the backyard, and then go back to the door.
Occasionally he would take a detour to his closet and sift through the shirts, khaki pants, sweaters, and jeans, wondering whether to put on something nice.
What counts as nice when you're about to go to bed though
, he thought, and as he did so he recognized the click of the doorknob beginning to turn.
The short figure of his sister slithered through the door and softly latched it shut behind her. Erika looked over her shoulder and turned slowly to face her brother, but otherwise remained where she stood, illuminated only by the dim moonlight.
"It's alright... here," David offered, taking a pair of cautious steps towards his petite guest.
Erika responded accordingly and reached tentatively towards David with both hands. She held her arms aloft lightly, wrists limp and palms facing down, almost as if guided by unseen puppeteer strings. David curled his fingertips into Erika's and pulled her closer, locking fingers and bringing her chest to rest just above his navel. Even though she had changed into thick pajamas which covered her from neck to ankles, her body felt cool against his bare skin.
"Did you see Ashlyn and Sara out the door? You're so cold and your hands are freezing!"
"Ye-yeah, I guess nights are still pretty chilly. They both complained about me kicking them out. Too early to call it a night or something, and Ashlyn wouldn't shut up about coming from so far away just so that I'd..." Erika trailed off.
"So, I see you're wearing your pajamas now?" David asked after a second.
"Well of course, I figured since I'm sleeping over I might as well," she said, twirling in place. Unlike the lone t-shirt from a few minutes ago, Erika's full attire now masked her curvature quite expertly. Her unassuming pajama pants with a straight cut gave no indication of the full thighs and plump calves David knew were waiting underneath, and the sleeves of her collared top hung some ways beyond her wrists, which she allowed to extend freely as she spun around.
"You still wear nothing but boxers to sleep, apparently," she teased, tugging and sliding them down a couple of inches.
"Hey! Wait a min--" David snapped.
Wanting to escape punishment for her mischief, Erika made to dive onto the bed. David caught her mid-twirl by the waist, eliciting a small gasp from the intrepid girl, but besides her brief exclamation almost immediately fell back and relaxed in his arms. David pondered if being caught had been her intention all along and decided that in either case, he might as well dig into his fresh catch. His fingers clawed at the thick cotton of her clothing and, as he searched further up his sister's figure, struck upon a mild surprise.
"You're not wearing a bra!"
Erika scoffed in amusement, "What did you expect? I'm not gonna wear one to go to sleep!"
"Well, I thought since you were taking so long, you might be putting on some of your lacey lingerie for me. You used to love showing it off, even to bed."
"You little peeper! How long have you had the hots for your sexy older sister?" she asked, coquettishly rubbing his hands on her perky breasts. "But anyway, I'm a changed woman. Don't you like me this way better though?"
"Hmm? I rather do. Less to unwrap," David whispered, squeezing her breasts. "Would it be alright if I touched you?"
"You already are y'know," Erika smiled.
"Yeah, I know, but I mean under your clothes..." David mustered, realizing how idiotic he sounded. He felt himself go red, though luckily it was probably too dark to tell.
His sister put on her best faux thinking face and said, "I don't know if you should... but I
think
it's what I came here for, so please, go right ahead."
Not waiting for a second invitation, David's arms lunged under Erika's top. He wanted to hold as much of her as he could physically accomplish, and his lips desired nothing except the taste of her skin; they sampled her shoulders, the nape of her neck, her ear. He desperately sought her own lips against his but restrained himself. While her head gave easily to his direction, it also felt terribly fragile, as if he could snap the vertebrae in her neck if he demanded a kiss too greedily.
"I'm going to take this off now, okay?" David whispered between suckles, his hands fumbling to find the button nearest her collar.
Erika giggled lightly, apparently amused at David's timid wording, but said what followed in a breathy, sincere tone, "Davy, listen, you don't have to tell me everything you're gonna do... I'm yours. Just show me how much you want me."
David paused for a moment. The mere scent of his sister clouded his thoughts and rattled his voice. He inhaled deeply to bring himself back to conscious reason before responding, "I want you very much. To be honest, I've wanted you for years now, you have no idea. And yes, I've always loved you as a sister, but more and more I've wanted other things from you. I've wanted your mouth, and breasts, and touch... your womanhood--"
"I can tell," Erika interjected, rubbing her hips into David's groin. His member jerked, a sensation both mildly painful and pleasurable that caused him to wince.
"But I shouldn't have; I shouldn't. I know what others will think if they find out. What do you think our parents will say if they do? If we stop here we can still just ignore it and never mention this again--"
"David. Look at me." Erika turned to face her younger brother, a stern, though not uncaring, look on her face. "I need you to think very carefully about what you're going to say next. Yes, we could stop. Sure, I won't say anything, and from what you're saying you probably won't either. You'll go back to just being my younger brother and can go off and have some other girl if you want. Same here, I can have some other guy."
Erika stepped away from her brother. David tried to keep hold of her hands, but she brushed him off. She crossed her arms, eyes downcast to her side, seemingly wanting to turn her back to him, but remaining motionless.
"Hey... I'm sorry if--"
"No, shut up and listen!" Erika snapped, her tone unsteady. "I took a risk tonight. I know I said my friends egged me on and I thought if you just ended up thinking I was drunk I could just go along with it, but I've meant everything I've said. I've actually wanted to be with you too for a while but now you're running away from me and I feel like what I'm doing is something crazy and I know that too! I know no one'll approve! But I can't help it. For me it's even worse because I'm way older than you and I feel like some demented pervert hitting on my younger brother and--"