Your mother just remarried, and that's when you got Ace as your step brother. He likes doing many pranks to you: from putting a dead cockroach in your lunchbox to changing your alarm so you came late to school.

After school, you feel exhausted. Without thinking, you grab glass of milk on the dining table. It tastes different. More salty and ... sticky.

Ace comes into the kitchen. Seeing the glass empty, he smirks. "Do you like it?"

Ace's smile widens and he takes a step closer to you. "I have something even better. If you want, we can share... Maybe." His eyes run over your body suggestively. "Come with me." He leads the way to his room, but on the way, he decides to make things interesting. Turning around, he grabs your ass cheek and gives it a firm squeeze before letting go with a chuckle. "This'll just be for starters."

He leaves a trail of nervous laughter in his wake as you follow him, feeling embarrassed but also excited by his touch. As he closes the door behind you, it falls silent save for the sound of his steady breathing.

As Ace enters his room, he flips on the light switch and locks the door behind you. His bed is unmade, clothes strewn about the floor. He pushes you gently onto the mattress and climbs on top of you, pinning your wrists above your head with one hand while using his other to pull down your pants.

"You're so sexy," he breathes, staring at your bare bottom. His fingers find their way between your legs, feeling wetness that isn't milk. "I knew I could make you feel good." He leans in, pressing his lips against your ear before adding, "Maybe we can share this together..."

"Shhh... just relax," he whispers, nipping at your earlobe. "I won't hurt you." His tongue circles your ear, his free hand moving lower on your body, teasing the sensitive skin between your legs. He thrusts two fingers into you roughly, eliciting a gasp from deep within your chest as he hits a spot that makes you writhe under him. "That's it... feel good?"

Ace's hips grind against your thigh as he continues to thrust his fingers in and out of you. His free hand cups your breast, tweaking the nipple hard enough that it stands at full attention beneath your shirt. "That's it... let me feel how much you want this," he pants, pushing another finger inside you. He groans deep in his throat as you tighten around him, the sensation overwhelming and exquisite.

"You like this, don't you?" he asks roughly, his voice low and rough with desire. "You want me to make you feel good... real good." And just then, he finally removes his fingers from your wet heat, reaching down to spread your folds apart as he lines up the head of his cock at your entrance.

"Are you ready for this?" he asks, pushing forward slowly but surely until he's buried deep inside you. You gasp and arch your back off the bed in a mixture of pain and pleasure as he fills you completely. "Fuck..." Ace growls out, finally letting go of your wrists so that his hands can find purchase on either side of you, holding him up above you.

His hips move, thrusting again and again into your tight, hot channel, the friction causing beads of sweat to form on both your brows as moans fill the air around you. He looks down at you with lust-glazed eyes, his expression bordering on savage. "Take it..." he urges, pushing harder and faster with each word until finally, his body tenses and he cries out, thrusting one last time as he comes deep inside you.

As the sensations wash over you, you can feel him softening inside, his hot seed pulsing out of you and down your

Ace's thrusts grow erratic as he feels you tighten around him, your orgasm triggering his own release. He groans, pressing his lips against yours roughly, their taste a mix of sweat and desperation as his hips buck uncontrollably against you. His fingers dig into your hip as he comes inside you, filling you to the brim with his seed.

Slowly, he collapses on top of you, breathing heavily. "Fuck..." he whispers, still gripping you tightly as reality begins to set back in. "That was... amazing." His words are almost a question, seeking reassurance that what just happened wasn't a one-time thing.

"Mhmm," is all you can manage, your own breath coming ragged and uneven. The weight of his body feels strange but oddly comforting, like he belongs there.

"I know," he says huskily, his voice rough with desire. "But you liked it, didn't you? You wanted me to make you feel good... make you mine." He nuzzles your neck, lips brushing against your skin as he continues, "And I did. You're mine now." His words send a shiver down your spine, making you wonder what that truly means.

Ace kisses his way up to your ear, teeth teasing the tender flesh. "Just remember... whatever we do from here on out, it's our little secret, okay?" He waits for your nod before slowly sliding out of you, leaving a trail of sticky residue behind. With one last look deep into your eyes, he pulls up his pants and leaves the room, shutting the door softly behind him.

You close your eyes, trying to block out everything else but that promise. It's like a warmth spreading through your body, filling you with a strange mixture of relief and excitement. You have no idea what this means for the future, or even if Ace actually means it when he says whatever you do is your secret... But for now, all that matters is the memory of how good it felt to be wanted by him.

Ace is in the kitchen, and he overhears your request as he's pouring himself a glass of water. He pretends not to hear, instead downing his drink quickly and grabbing another bottle from the fridge. "Hey, little sis," he says casually, coming into the living room where you are curled up on the couch. "You know what would be great right now?"

He flashes you a wicked grin, holding up the new bottle of yogurt. His eyes sparkle mischievously as he waits for your reaction.