[POV Stepsister] Training Phase

The second the bedroom door clicked shut behind John, I let myself fall backward onto the mattress. My legs were still parted slightly, and the room's cool air brushed across the damp fabric of my sweatpants.

I took a deep breath through my nose. My entire body was still humming from that intense orgasm he had just delivered with his tongue. A wide, wicked grin spread across my face. Reaching for my chest, I closed my fingers around the small brass key that had warmed against my skin and turned it between my fingertips.

He had been so damn obedient. That sheer relief in his eyes when he dropped to his knees before me had made me almost wetter than his tongue did. He hadn’t even flinched when I tied the silk over his eyes. He wanted it. He was practically begging me to strip away every last decision from him. Begging me to keep the reins so tight that he had no choice left but to submit.

My phone buzzed on the nightstand. Stretching languidly, I reached over, snagged the device, and unlocked the screen.

A text from Nadja.

*“Hey, you still alive? Did we pass the exam, or are you already scheduling your retake? Sitting in the park with some wine, get your ass over here!”*

I smirked and typed a quick reply: *“Exam was a breeze. Don’t need wine, already had my reward program ”*

Not three seconds later, the three typing dots flashed on screen.

*“OMG, spill!! Don’t tell me it was your little stepbro?! Did you finally put hands on him?”*

Biting my lower lip, I propped myself up with one hand on the mattress. Nadja was the only person who knew what actually went on behind the closed doors of our wing. She was the one person I could talk to about things that would make any normal person think I was completely insane. She knew about my sadistic streak, and she knew full well how much a man’s helplessness turned me on.

*“He just ate me out. Like a good little dog, blindfolded. And the best part: he’s been locked in a cage since Sunday. Completely sealed up.”*

Three exclamation points popped up, followed by a voice note. I pressed the phone to my ear.

“You locked him up?!” Nadja squealed through the speaker, torn between disbelief and pure thrill. “Loona, you are such a depraved bitch, I love it! Show me! Did you take pictures? When do I finally get to come over and inspect the toy up close? You promised I’d get a turn with him too!”

Grinning, I held down the mic icon.

“Cool your jets, Nadja,” I whispered into it. “He’s still in the training phase. First, he has to fully understand that he belongs to me and has nowhere to go. You should’ve seen him earlier. Last week, after Alex came over, John even licked his cum out of my pussy down to the last drop without batting an eye. He literally swallows whatever I put in front of him. If I hand him over to you now, you’ll break him too fast.”

Nadja’s reply came as text immediately: *“You made him eat Alex’s leftovers?! I’m losing my mind. You’re my hero. But you better not forget about me once you two move into the flat!”*

Smirking, I tossed the phone aside. I stood up, walked over to the full-length mirror on my wardrobe, and pulled the top over my head. My nipples were still hard, pointing sharp and erect. In the glass, my gaze drifted to the thin leather cord around my neck.

The key looked so unassuming. A tiny sliver of brass, barely larger than my fingernail. Yet that little piece of metal held John’s entire masculinity in check.

When I dropped the bombshell about moving in together at Sunday’s dinner, the look on his face had been priceless. He had been terrified, absolutely terrified—and yet his groin had pulsed right under my foot.

My mother, Vanessa, smelled something off; I could tell. She wasn’t stupid, and she knew men well enough to understand what that stain on his pants on Thursday really meant. But above all, she cared about keeping the peace in the house. She had my back anyway, even if she’d never openly sign off on anything this extreme. And John’s father… well. To the outside world, he loved playing the alpha in the house, but at the end of the day, he was just as dick-driven as every other guy. Vanessa knew exactly how to wrap him around her finger, and he ate right out of my hand anyway because he genuinely believed I was whipping his lazy son into a disciplined, model athlete. Both men in this house were being managed; one just didn't realize it as clearly as the other.

Once we had our own place, there wouldn’t be any facade left to maintain. No Vanessa turning the corner unannounced. No need to play it careful. I’d dictate down to the second when he was allowed to jerk off, what he was allowed to wear, and who he was going to serve.

I dragged my fingertips down my stomach, pushed the waistband of my sweatpants lower, and touched myself lightly. A hot, sharp shiver raced through my thighs. The thought of keeping him locked up for months on end, forcing him to watch me walk around the flat stark naked without ever being allowed to lay a finger on me… that beat any sex I’d ever had with guys like Alex.

Maybe I’d let him come soon. Sometime. As an act of mercy.

Definitely not the way he was used to, though. And above all: only when my hands were pulling the strings.

I pulled on a fresh shirt, snatched my phone, and tucked the key back neatly into my neckline. Time to go check if my little slave was being a good boy and finishing his schoolwork.