My father hugs me gently, as my step father stands impatiently by the car. 

"See you in a month, behave while we are away, and try to get along well with your brother." 

"Have a good trip." I wave as they get in the car and drive away for their summer cruise, leaving me and my step brother alone for the whole summer, both of us happy to spend it relaxing after finishing our college exams. Not that we really get on so great, he has never been to open with me, not becoming family till recently, I think my father hopes that we will bond while left alone, I've tried being nice to him, it can't be easy to suddenly have a brother nearly the same age as you move into your home when you're 19. I head back inside and pass my step brother, he says nothing as he heads to his room, I head to mine as well, with my parents gone I feel up for some fun. I close my door and pull out my bedside drawer, in it is my buttplug and chastity cage, I lock on my cage, my cock immediately straining as it clicks shut, locking it away. I quickly cover my crotch as the door opens, hiding my caged cock, my plug and the key to my cage in view resting in my open drawer. I look slightly embarrassed as he smiles seeing my vibrating plug.

"No need to be embarrassed, I guessed a wimp like you would enjoy butt stuff."

"What do you want?" 

"The folks left us takeaway money right?" I sigh, is that why he barged in? Of course he wasn’t paying attention earlier.

"Yes, it's in the second drawer down in the kitchen."

"Awesome. Have fun butt boy." With that he leaves, not shutting my door, I make sure to keep my crotch covered as I move over and shut the door. Fucking dickhead. Why my dad married his father I have no idea. 

Needing to relax I pick up my plug and close the bedside drawer. I moan as I slide it into my ass, slowly pushing it in, my ass closing tightly around the base as it hungrily swallows the plug as it fills my ass. I go to turn it on but suddenly hear the landline ringing. I sigh, my moron brother never picks it up, he probably can't hear it over his music. I quickly race down the stairs, the plug in my ass rubbing inside my ass as I move, causing my cock to strain painfully against its prison. Reaching the phone I pick it up.

"Hello?" The line immediately cuts off, I put the phone down, probably some ridiculous marketing call or something. Even more frustrated I head upstairs and back to my room, closing the door once again and picking up my remote, pushing the controls and turning on the plug as it roars to life, causing me to let out a quiet moan. I remove my clothes and caress my hairless body as I do, enjoying the feeling, slowly being driven to the edge as my cock strains in its cage. I lay on my bed and moan, knowing my step brother won't hear me over his music. I quickly begin to breath hard and wiggle on my bed, moving my caged cock, arching my back as I get closer and closer to the edge, quiet gasping moans escape my mouth as I roll my eyes and my body shakes as I hold my orgasm back, making it build and build, until it explodes out of my cock uncontrollably. 

I lay breathing hard, cum dripping from my cage as I lower the settings down to a gentle buzzing. My mind hazy and relaxed in blissful happiness, I lay and playfully collect my dripping cum and taste it, repeating the process several times, enjoying the taste. 

I steer, my cock straining as my plug continues to tease me. I sleepily move my hand down and feel the cold hard metal encasing my cock and moan as I rub it in frustration. I pull open my drawer and feel around for my key. My heart stops in terror. Where is it? I look in the drawer, my heart racing, where the fuck is it? 

I hear my door open and see my step brother smiling at me, enjoying the panic and humiliation as I stand completely naked in front of him, my caged and straining cock on full display.

"Looking for something?" He calmly holds up the key to my cage. 

"I knew you were a loser the moment I met you. Your pathetic father is the same, I saw my dad fucking another man right in front of him, his cock caged just like yours. I guess it's genetic or something." I move towards him. 

"Give it!" He holds it up, his larger body easily keeping it out of reach, despite being only half a year apart in age our bodies are very different, I'm small and skinny, while he is tall and built like a rugby player, I could never overpower him and he knows it, smiling down at me as I struggle. 

"Behave my little bitch. You want this back you'll have to do everything I tell you. Although I think you'll probably like that wouldn't you beta boy." I stand completely helpless and defeated, my cock straining hard in its cage, frustration growing, I need the key back. 

"Pass me that remote." With no choice but to make him happy I pick up the remote to my plug and hand it to him. 

"Good boy. Now kneel for you new master." I kneel down, and moan as he turns up my plug, waves of pleasure flowing through me for a moment before he lowers it back to a gentle teasing again, humiliation, embarrassment and shame coming over me as my mind clears, causing my cock to strain harder.

"Good boy, I'm not a complete bastard, I reward good behaviour." He unzips his trousers and pulls out his cock. 

"Why don't you show me how much you want your key back?" He can't be serious? 

"But... I'm your brother?" I suddenly feel a painful shock from my plug and drop to the floor as I cry out. 

"Step brother. You are only my brother cause my dad married your pathetic wimp of a father, and now I own his pathetic wimp of a son, seems perfectly natural to me. So get to work bitch!" I rise back to my knees and slowly take his cock in my hand and start to stroke it, pulling back the foreskin and sliding my lips over its head and begin to suck his cock, his hands holding the back of my head, forcing it down, pushing his cock down my throat and moving me back and forth, as he fucks my throat, ignoring my gagging and choking, his cum quickly shooting down my throat and into my mouth.

"You better swallow my superior cum." I swallow it down, not wanting to give him any reason not to return my key, as I do I feel the plug in my ass increase in strength, causing my cock to strain hard in its cage. 

"You are such a submissive slut. I think I'll keep your key for now, I think this summer will be very entertaining." What! But I've done everything he wants. How long will he keep me locked up like this?

"Now then I fancy a pizza, go order me one, you can have my crusts for dinner." Without much choice I get up and walk passed, quickly getting a shock.

"What do you say bitch?" 

"Yes sir." 

"Good, remember your manners slave." 

My stomach rumbles as I clean and tidy the house, my plug constantly teasing me as I move. My meal last night of pizza crust doing little to fill me, the taste of my breakfast lingers in my mouth after I took care of my step brother’s morning wood, my own painfully trying to break through its metal prison. 

I feel a sudden shock and look around as I jump.

"Make sure everything is nice and tidy slave, I have friends round tonight and I want the place looking presentable. Of cause it won't be tomorrow but that's for you to worry about, not me." He's having a party? I hope he doesn't expect me there like this?

"Of cause I need you ready and presentable as well, you'll be greeting and serving guests, and I don't just mean snacks and drinks." What!

"Master please?" I cry out and grip my ass cheeks as several painful shocks ripple through me.

"I don't care about your stupid opinions slave! You better behave tonight or I'll destroy your key and pour superglue into the lock of your chastity cage, sealing that pathetic little cock of yours away forever. Do you understand?" I keep my head bowed, and breath hard from the pain.

"Y... yes sir." 

"Good, now get to work.” 

"Come on in!" I kneel in the living room as I hear my step brother open the door, my heart racing as any moment his friends will walk in and see me naked and locked in my cage.

"What is that?" 

"That's my pathetic wimp beta bitch step brother, I'm in charge of him for the summer." I hear his friends laughing at me, humiliation making my cock strain hard in its prison.

"And what's that?" 

"It's his chastity cage, he can't get hard or touch his tiny cock without the key, which I have." The group laughs at me louder.

"Oh my god! That's so pathetic of him! What loser gets their dick locked up?" 

"He did it himself!" 

"What!" 

"Tell them slave?" I swallow as I struggle to answer, the humiliation and embarrassment almost to much to bare.

"Y... yes... sir... I... I locked myself in chastity." The group of men laugh hysterically at how pathetic I am as my cock strains in its small prison.

"What a loser! You should keep him locked away forever! The little bitch deserves it!" 

"Enough of him, who wants drinks? Slave get off your lazy ass and fetch their drinks." Relieved to not be the centre of attention I quickly do as I'm told. 

"Slave boy, get over here!" I move over to one of the guests.

"Are you thirsty after all the work you are doing?" Confused by the sudden kindness I don't respond for a second.

"Yes sir." He smiles, trying to hold back a laugh as he hands me a warm cup of yellow liquid, the obvious smell of piss filling my senses.

"Drink up bitch." I slowly bring the cup to my lips, pouring the strong tasting warm liquid into my mouth and force it down my throat, almost gagging as I do.

"Chug! Chug! Chug!" The whole room joins in encouraging me to keep drinking the warm piss, feeling both encouraged and humiliated I down the rest of my drink, twitching as I swallow down the last drops to applause and cheers.

"Thankyou sir." He unzips his trousers.

"You can thank me in a more meaningful way slut." I kneel down, my cock straining, my mind horny and frustrated as I slide my lips over his cock and begin to suck him off, in front of the other party guests, part of me no longer caring as his cum fills my mouth and I swallow it down. I barely move as another guests cock slides into my mouth, while my brother’s hands grip my sides and pull me off my knees, making me bend over as I continue to pleasure the cock in my mouth. I moan as my plug is roughly pulled out and gasp into the cock in my mouth as his cock rams hard inside me as my step brother fucks my ass. I moan and struggle as I'm spitroasted, one of the people involved being my own step brother, the party guests smiling and laughing at me as I'm fucked like a slut, cheering my brother on as he truly makes me his bitch, my cock unable to take any more abuse as I moan loudly and squirt cum from my cage, the guests laughing and mocking me.

"The bitch really enjoys it!"

"What a horny slut!" 

"You like that bro? I'm sure you'll get plenty more now everyone has seen you for exactly what you are, a pathetic horny, slutty, beta  bitch, loser." At this I feel him cum deep in my ass, both cocks pulling out, my step brother’s cock sliding into my mouth, forcing me to taste my ass as I clean his superior cock, while the man who was just fucking my throat slides his now saliva lubed cock into my ass and begins to fuck me uncaringly, my own cock already beginning to strain once again.

I groan exhaustedly. Cum still leaking from my sore and well used ass, my mouth only tasting cum, piss and ass, my tired body moving through the house, my caged cock straining and dripping as I clean up the mess from the night before. 

"Well done slave, last night's parry was a success. My friends can't wait for the next one." I freeze.

"N... Next one sir?" My step brother smiles.

"Well yeah, we have the house all summer and you're the best party entertainment around, we'll probably have more guests next time." He slaps my ass and walks away, my cock straining in both dread and arousal at the idea of doing that again. 

Epilogue:

I moan as my master fucks my ass and I suck on my step father’s cock, my own father watching his son degrade himself like the slut he is, both our cocks straining hard in our cages as we serve our masters. My long denied cock and swollen balls swing below me with every thrust, my master never returning my key, my constantly horny and frustrated mind not caring about who is watching as I'm used like the submissive slut that I am, master having shown me that I'm just like my father. I'm not sure if this is exactly how he wanted us to bond over the summer but I'm grateful that I found a way to grow closer to my step brother and find my true place and purpose in life.