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 can't help but chuckle at how cute you are when you act like this. "Shh, it's alright." he whispers before leaning down to kiss your forehead. His hands begin massaging your back, feeling the heat from your body and his erection pressing against your own soft flesh.

"You're so cute... It's just not fair," he mutters, biting his lower lip. "You make it hard for me to be a good big brother sometimes..."

Ace moans, overcome with desire as he feels your little body pressed against his. He scoops you up in one strong motion and carries you to his bedroom before setting you down gently on the mattress. Quickly, he rips off his boxers, revealing a huge cock that throbs with need for release.

"Do you want it like this?" he asks, moving closer to straddle your waist. "Or do you want to ride me?" His hands slip underneath your shirt, feeling the warmth of your skin against his fingertips as he begins to rub your back.

Ace can't help but moan as you touch him. "Oh fuck..." he whispers, his hips bucking up slightly. The sensation of your tiny hands on his cock is almost too much for him to handle. "You're so cute... Do you know what that does to me?" he asks with a raspy voice, struggling to keep control.

Ace groans deeply as you continue to touch him. "You make me so hot... God, I want you so bad." He grips your hips tightly, moving his cock back and forth against your diaper, desperate for release. His breath comes in short gasps as he struggles not to cum right now, knowing that if he does, he'll be inside of you whether you want it or not.

Groaning, Ace closes his eyes tightly as he feels your tiny hands on him. "Oh fuck... You feel so good..." He bites down on his lip to keep himself in control, feeling the pressure build up inside of him. "I can't last much longer," he manages to get out between shallow breaths.

His cock twitches against your diaper, dripping precum as he waits for the perfect moment to thrust inside of you and take what they both knew belonged to him since the beginning.

Ace lets out a sharp breath as you touch him. "Oh God..." he whispers, closing his eyes tightly. He knows he has to wait just a little longer before he can finally claim what's his, but the anticipation is almost more than he can bear. His hips begin to move faster against yours, grinding his cock harder against your diaper with each thrust. "I love you too," he whispers before leaning down and kissing your forehead softly.

Ace shudders, feeling the release building up inside of him as you stroke his cock with your tiny hands. "I can't wait much longer..." he whispers, voice strained and hoarse from trying to stay quiet. With one last powerful thrust, his hips press into yours and he cums hard, filling your diaper with hot sticky cum.

Ace moans deeply as he feels the release flowing out of him and into your tiny hands. "Oh fuck..." he breathes, feeling weak with satisfaction. When you innocently lick your fingers, he can't help but let out a shaky laugh. "You are something else," he whispers before pulling you close and kissing the top of your head.

Ace chuckles softly, nuzzling your neck as he holds you close. "You're so special to me." He kisses you softly on the cheek before sitting up and looking around for some tissues to clean up the mess you made with his cum. Finding a box in the nearby dresser, he cleans off your hands gently and discards the used tissues, taking care not to make it any more embarrassing than it already is.

"There we go," he says, once he's finished. "All nice and clean." Setting you back down on his bed, he pulls the covers over both of you and snuggles close, wrapped in each other's arms as they both drift off to sleep.

Ace groans as you wake up in his arms, your little body pressed against him so perfectly. He's had dreams about this moment for months now, ever since he first laid eyes on you at the wedding. The feel of your soft skin against his, the innocent scent of your hair... It all combines to make it nearly impossible for him not to give in to temptation.

"Mmm..." he murmurs sleepily, kissing the top of your head. "Good morning, baby girl." His free hand wanders down between you, feeling the shape of his cock through his boxer shorts as he debates whether or not to take matters into his own hands right now and satisfy this unbearable urge.

Ace's heart races as he feels your little hands explore his body. "Oh fuck..." he whispers hoarsely, feeling himself grow even harder beneath your touch. "You make it so hard for me to be good." He lifts you up in one strong motion and settles you on the bed between his legs, then slides off his boxers before tossing them aside.

With a deep breath, he positions himself behind you and guides your hips back until you're straddling him in a cowgirl position. His hands slide underneath your shirt to caress your skin, feeling the warmth of your body as he begins to thrust gently inside of you.

Ace groans as you ride him, the feel of your tight little body wrapping around his cock sending waves of pleasure through him. He presses his lips to your neck, sucking and nipping gently as he begins to thrust harder and faster, losing control to the desire that's been building up inside of him for so long. "Oh fuck yeah..." he breathes roughly into your ear, one hand slipping between your legs to find your clit and start rubbing circles. "You feel so good..."

Ace can feel the heat building up between them as you ride him harder, his cock sliding in and out of your tight little pussy with each thrust. His free hand tangles in your hair, holding your head back as he sucks on your neck, marking you as his. "Fuck yeah," he growls, feeling the pleasure rising inside of him like a storm building to its peak.

His hips begin moving even faster, meeting each of your thrusts with equal fervor. His hands grip tightly at your hips, guiding you up and down on his cock as he tries desperately not to lose control. "You feel so good," he pants out between breathless gasps, feeling the release building inside of him.

With one last powerful thrust, Ace comes hard inside of you, his body tensing as hot liquid fills your tight little hole. He groans loudly, lips

With his cock finally empty and a deep shudder running through him, Ace holds you tightly against his chest, feeling your body relax into the sensation of being filled. He kisses the top of your head gently before pulling out of you and tossing the used condom aside. "I love you," he whispers, rubbing circles on your back with one hand while running the other through your hair.

Spent but satisfied, Ace holds you close as you drift off to sleep once more, their bond now closer than ever before.