I knocked Narcissa's door, though when I pressed my ear to the door, I heard a muffled moan.
"Still?" I murmured to myself in excitement.
The cream I used had a notoriously short effect time, most of it fading after two hours. If she was still continuing her actions, it was very good news.
Erasing the smug smile from my lips took quite a bit of time. I considered entering without knocking, but she wasn't ready for such direct intervention yet.
Instead, I cast an unlocking spell on the door, unlocking it silently. Then I knocked on the door.
"Mom, I'm coming in!" I said, disregarding her shocked cry, and started to turn the doorknob.
Still, I was deliberately slow in entering, wanting to give her time to gather herself. The euphoria of barely escaping being caught would fit much better into my plans.
The view I saw when I walked inside was exquisite. She was lying on the bed, a hastily pulled cover on her. Her face was vermilion, her breathing hard.
A pair of panties were on the ground, a few feet away from the bed, looking like they were thrown hastily, like the wearer of them were in a hurry. I could feel a stirring in my pants, so I started walking towards her bed.
"What are you doing, son?" she asked in a panic.
"I'm getting ready to sleep, mom," I answered, deliberately keeping my voice casual.
"Last night was the first sleep without nightmares in the last six months," I continued, injecting a bit of sadness in my tone.
"You wouldn't deprive me off it, right?" Targeting her maternal instincts was enough to stall her to inaction for a few seconds, enough time for me to slip under the covers and wrap my hands around her waist.
I could feel the thin fabric of her sleepwear under my touch, and a light touch of my little finger confirmed the absence of her underwear.
I could feel her freezing in indecision. After all, she couldn't even stand up without displaying her distinct lack of panties.
And while it would have made sense for her to ask for an excuse, or even ask me to close my eyes, being interrupted in the middle of the masturbation session wasn't very conductive for critical thinking.
The lust perfume I was wearing wasn't helping her to calm her mind, I was sure.
I let her continue laying motionless on her back, trying to come up with a solution, my hands tight around her waist, my head resting on her shoulder.
I could feel her heartbeat thumping, out of control, her shallow breaths ringing in my ears.
Despite doing my best to keep my expression clueless, I could feel the edge of my cheeks tugging. "Good night," I murmured, trying to act like I was about to fall asleep.
Just like the previous night, I feigned sleep, and just like last night, she started struggling to get away without waking me up, only to fail.
Her tries soon faded. It didn't take long for her to realize she was facing the same situation as the night before, locked in place, with no way to pull away for hours without 'waking' me up.
Still, I was surprised with the amount she decided to wait.
Barely five minutes later, she turned her back to him once more, her hand was already on her pussy, her fingers sliding inside.
I decided to speed up my plan. Even with the addition of the lust potions, her reactions were much harder than I assumed, which could cause her to search for alternatives.
Lucius wasn't around, away on a mission, but it didn't change the fact that she was currently an easy mark for every two-bit predatory Death Eater. I had no intention to share with her.
So, I waited until her breathing started to go out of control, then moved my hands while acting like I was asleep.
The hem of her negligee was already up, so my hands easily slipped under it, resting on her naked stomach.
Her whole body froze as soon as our skin touched.
"Son," she murmured hesitantly. "Son, are you awake." I continued playing dead, and soon, her courage, or her arousal returned in full force, her fingers moving once more.
Again, I waited until her pleasure was high enough that she was having trouble to keep her voice low.
Then, it was the time for me to act once more. This time, I elected to suddenly pull her tighter, my cock resting between her naked ass cheeks.
I wasn't surprised when she stiffened, but I stiffened as well when her hands started moving once more, her hips moving in tandem.
Her movement was so sudden that I barely held back a moan. Curious to test her limits, I let one of my hands crawl upwards as she rocked her body, until it touched the bottom of her breasts.
She didn't even bother to slow down before she gently grabbed my wrist, but contrary to my expectation, she gently pushed it over her breast instead of pulling it away.
I suddenly found myself palming her generous breasts, my cock getting even harder. I cursed the presence of my pajamas, numbing the precious sensations as she rubbed her body against mine.
I took a deep breath, trying to focus on the feeling, hoping to catch my own release before hers, but it was in vain.
She started shuddering before I could reach a climax of my own, her moans momentarily filling the room.
I could feel her drifting to sleep, leaving me with a full arousal.
I could have cast a stunner and finished myself, but I didn't do so.
After all, despite being unknowing, she teased me mercilessly. Half an hour later, I drifted to sleep, my mind busy with the plan for the morning…
I was lucky to be able to wake up before Narcissa, my hand still on her tits, my morning wood trying to push her naked ass cheeks.