* All persons in this story are 18 years of age or older *
When my parents announced the next social event that we were to attend, and that it would be hosted at another lavish estate that I knew was situated next to a wooded area, I got hard just thinking about it. Could the Wood Nymph travel between forests? If she could travel to my house then it was plausible. I lived miles away from the first estate, and this place was probably closer to the first one too. I was pretty certain that I would be seeing her if I went to this party.
If...Courtney went with us AND she fell asleep. That was actually going to be pretty tough for a couple of reasons: she rarely drank at these things and, even if she got blasted, there was no guarantee that she would fall asleep. Maybe the Wood Nymph would make her fall asleep so that we could see each other. Maybe she had already done that before?
It had been three days since that time in the bathroom with Courtney where I tried to confront her about everything. I couldn't straight up ask her if she was actually the Wood Nymph but in the end it seemed like it didn't really matter, and there was a small spark of...something between us at that moment. I hadn't talked much to her since then but there were some tense moments where we passed each other in the hallway or shared our bathroom. Nothing sexual but I knew that she was probably thinking the same things that I was, namely that we had basically informed the other person that we were going to masturbate. The effects of the Wood Nymph using her body for sexual purposes had apparently left some residual arousal in Courtney and confiding that fact in me had shown that she was not appalled by the idea of her own brother thinking of her in that way.
I lay in my bed that night casually masturbating while I thought about how to act around her at the upcoming party. It was tomorrow and I was still on the fence if I was going to try to initiate a meeting from the Wood Nymph or just let it occur naturally. Maybe she wouldn't visit me at all, since she hadn't visited me since that time three days ago. I wasn't really expecting it every night though, even if I had fantasized about that before. Now I was thinking more about Courtney and how to possibly get inside her panties. Was that what I really wanted?
It was getting late and I was almost about to give up stroking myself when I heard my window open. I sat up in bed and looked over to see a familiar green shape climbing into my room.
"Good evening," the Wood Nymph said in almost a whisper as she sauntered over to me.
I smiled at her and my erection got a jolt of new life. But I also wondered why she chose to come in through the window when Courtney was just down the hall. Oh well, I didn't care that much about it.
I watched her supple green body approach me and I did not try to hide my sprouting cock from her eyes.
"I was wondering when I'd see you again," I said.
The Wood Nymph smiled brightly and went straight for my cock. The idea that this was actually my sister with her mouth descending down my shaft was extra thrilling, and that plus the fact that I'd already been masturbating for a while made me want to grab her hair and start pumping my cock hard into her throat. But I didn't. I let her do everything and I just stared while she expertly sucked on my knob.
It was so surreal seeing her do this to me, and it felt fucking great too. I imagined that Courtney was the one doing it, not just her body but actually her, willingly sucking my cock, and that made me cum hard. I grunted and winced as my cock began spewing thick globs into the Wood Nymph's mouth. She kept sucking and sucking and didn't stop the entire time I climaxed. Finally I had to push her back a little to get some relief from the intensity of it all.
She leaned back and smiled as she licked her lips. "Thank you for feeding me. You needed that, didn't you? Been thinking about your sister?"
"How'd you guess?" I said sarcastically. I eyed her naked green body with the scant few leaves stuck to it and stayed rock hard.
"I have felt what she feels as well. She desires sex badly but has no partner to engage with."
"Really..." I thought about that while she continued stroking me softly.
"You have another load for me, right?" She seemed eager to keep fucking but my mind was clear now and I had questions that needed answering.
"I know you're really magic, or whatever," I started, "because I saw you transform into Courtney last time. But I gotta ask...how come I never heard of a Wood Nymph before? Are you, like, a spirit or something? Why do you use Courtney's body?"
She smiled and climbed into my lap, guiding my still hard cock between her legs. She sunk down onto me and milked me with her cunt as she spoke.
"I use her physical form because I don't have one myself," she explained, her dark eyes boring into me enticingly. "I've always been fascinated with humans, especially the carnal pleasure they are capable of, but there are rules for beings like myself and I must abide by them. Those like me keep secretive because it would threaten us to reveal ourselves."
"Then why did you show yourself to me then?" I asked, puzzled.
"You passed near me in the forest those days ago and I could read inside your mind that you were different. I could see that there was a yearning inside of you for something more than your life gives you. You were like me in many ways."
Damn, that was harsh. Was that how I really felt and I hadn't even realized it myself?
"I could sense your close bond with your sister," she continued, "and chose to manifest her form because of the attraction that you felt for her. She was asleep in the large house where your family was socializing so I 'borrowed' her flesh to seduce you."
"That's...kinda creepy actually," I said, even though I was balls deep inside of her. "I mean, I guess I'm technically fucking her right now, aren't I?"
The Wood Nymph smiled devilishly. "This is her body, and though humans seem inclined to reject incestuous acts, some of them are more lenient, like yourself. She feels the same in fact."
I had my suspicions, after the whole "catching me masturbating" thing and how amenable she was to it.
"I make sure that her body comes to no harm, and in return I get pleasure that I would never get to experience otherwise. I feel like it is a very good arrangement."
"I just can't believe this is all real," I said, starting to thrust up inside of her. "I never believed in magic before. I never even knew I was attracted to my own sister before, but I definitely am now."
"You always were," she said with a small whimper as she received my thrusts eagerly. "This is your chance to fuck your sister with no negative repercussions. You can have your way with me, and her, as much as you want."
I huffed a little and leaned forward as I started to take charge of our movements. "You said...nngh...that my cum 'fed' you. How does that work if you're not physical?"
She closed her eyes as the sensation of my cock pounding her was beginning to take over her awareness. "There is magic in your semen, in the semen of all males. I can exist without it but...hhhhhhuuuuhhh...nnnn, it;s like a drug to me. Fuck...it makes me feel sooo good."
I forgot what we were even talking about as my dick took over and I was focused now only on filling her tight hole over and over. I kept thinking of her as both the Wood Nymph and Courtney, alternating at times but also combining them into one person, and it was really getting me off. I wasn't sure which was more arousing, the fact that I was fucking my sister or a magical creature.
"If I cum...I won't get Courtney pregnant, right?"
Hearing me talk about cumming sent her over the edge and the Wood Nymph climaxed hard underneath me. Watching and feeling that happen sent me over the edge too, but the question was burning in my mind and I tried desperately to hold back.
"Rrrrggg...will I?!" I hissed at her, biting my lips and clenching my cock as hard as I could to keep from blowing.
