Undercover helper

You finally heard her move after what felt like minutes of her trying to make up her mind. At first, you felt her cautiously get down on her knees at the side of the bed and lift the covers closest to your crotch. You were already hard as a rock just from the anticipation and that made sure that Lucy was ready to help you at a moment’s notice, her active effect playing its part perfectly.

What surprised you was that she lowered the covers down and seemed to shuffle back, her exact movements hidden from you while you kept your eyes closed. You also couldn’t tell if Lucy had closed your bedroom door either when she had walked in, the thought of having an audience being potentially exciting under different circumstances.

Lucy would probably not react too well if she was caught by Mom or Sarah but before you could continue that train of thought, you felt Lucy’s hand rest on top of the covers over your leg, only now she was at the foot of the bed.

The covers lifted and you felt her join you under the covers, the mattress shifting as it supported the both of you. She slowly crawled closer to her target and hovered over your legs, yours pressed together while she straddled you, her knees either side of you.

With the way you were lay, it was easier for her to remove your boxers as your legs weren’t splayed out, the only problem being your body weight pinning them underneath you. Lucy didn’t seem to have the same worries as you, her hands grabbing the waistband to pull them down.

With minimal movement you were able to help her get them off without being suspicious, slightly raising your hips and upper body so that she couldn’t see from where she lay. You also opened your eyes now that she was under the covers but that gave you very little to watch, only helping you see if anyone other than you or Lucy was peeking into the room.

Thankfully, it was just the two of you when you felt Lucy wrap her fingers around your shaft, managing to keep yourself quiet but still twitching at the contact. That stopped Lucy and she waited to see if you made any more movements. Thinking she was safe to continue, she slowly worked her hand up and down your cock, picking up speed as se got more confident and started to forget that she was supposed to be being stealthy.

You wanted to make it known that you had woken up but you waited patiently while trying to stifle any noises you were going to make, taking a moment to see if you she would take things further.

Your patience was rewarded in this case as Lucy found herself wanting to use more than just her hands, her breath against the underside of your cock making it obvious how close her mouth was to you already. The first kiss of her lips against the tip made shivers tingle down your spine and her tongue snaking out to taste you was more than enough to get a reaction out of you.

Even after getting a groan out of you, she didn’t pull back, moving to your tip before her lips parted and she lowered her mouth down until your dick was as far inside her as she could manage. You didn’t want to scare her while she was down there so to make your presence known, you slowly moved your hand down towards her.

You ran it along your side until you made contact with her and then let your fingers trace up her body until you reached her head, cupping her cheek and gently stroking it to help her relax.

She did tense up at first once she realised you were awake, but that reaction left your manhood intact and she started to relax once your touch remained gentle. Neither of you wanted to talk, you not wanting to break the mood and maybe Lucy wanted to stay hidden to avoid answering your potential questions.

As much as you enjoyed the tender moment, you still had your dick in your sister’s mouth and the desire to get yourself off was only increasing. Moving your hand up from her cheek to rest on the back of her head, you made it clear what you wanted to happen next. You urged her to continue with only a little pressure from your hand to spur her on and get her to start moving again.

Lucy took the hint and once again let her lips slide up and down your shaft, letting her tongue flick across your tip now that she knew you were awake and she could now start to up the ante.

Without being able to watch her, you could only imagine how she looked as started to fully focus on getting you closer to climax. Her active seemed to kick back in at full **** as she didn’t hold back, using everything she had at her disposal to get you to cum as soon as she possibly could.

Her hand wrapped around the bottom of your shaft to stroke you while her head bobbed up and down, the noises of her struggling to take you so far only adding to the experience. For a moment, you felt her slow until almost a complete stop, feeling her shiver and shudder with a moan escaping her mouth around your shaft.

Your eyes widened when you realised she had cum before you, her hand not on your cock hidden under the covers obviously having been helping to relieve herself.

That fact gave you a surge of confidence that willed you to take more control, lifting up the covers tosee soom shock in her eyes before you brought your both your hands to hold her head. That actually seemed to lessen her shock and she let you control the pace going forward, directing her at the speed you wanted.

Your interests now aligned with Lucy's, wanting to get you off as quickly as possible instead of messing around with her under the covers. You pushed her head up and down as she barely managed to get your length down her throat, the occasional noise coming from her when you held her down for too long.

It wasn’t long before you felt your climax nearing and you didn’t feel the need to hold back, tapping Lucy to let her know and getting a rushed blink back in return, the only confirmation you could get when both her hands and mouth were very much busy.

“Fuck. Swallow it all” was all you managed to say, seeing no other option given the position Lucy was in with your hands holding her tightly in place.

Her lips made and seal around your tip and the pressure she applied increased, feeling as though she was sucking the life out of you as your orgasm rushed through you. Your first rope splashed against the back of her throat and **** her to react, taking more of your length inside her on impulse. She was prepared for the next as the rest of your climax filled her mouth until she was **** to swallow, a look of bliss on her face that came from fulfilling the needs of her kink.

She swallowed twice more, each time getting less from you in return but still having that same look that showed she was truly satisfied, only letting you go when she was sure you had nothing else left to give.

You seemed more out of breath than her but you knew you would quickly recover, now wonder how Lucy would react now that her active effect had now been fulfilled.

Author's note: Spoiler chapter updated shortly :)