Your brother appears

A pair of hands appears from underneath your arms, grabbing and pawing at your breasts from behind, trying to undo the big buttons on your pajamas and pull your top off without looking. You jump in surprise, taking the cock out of your mouth and turning your head around to see your brother standing on the other side of your bed, apparently having been there the whole time. He nearly pops several buttons off in his rush to free your tits from their confines.

"Pete, don't rip your sister's clothes off! I told you to wait your turn." Your father yells sharply, not taking his eyes off of your perky tits as Pete pops them into his view. His cock in your hand throbs noticeably as he sees them for the first time since they grew in, at least that you're aware of. Peter pays no attention, pulling your hand away to take your pajama top the rest of the way off, then resumes manhandling your breasts.

"Come on, dad. You said if I waited patiently and let mom jerk me off on her food, you'd let me do whatever I want after her birthday!" Pete quips back as he begins to play with your puffy pink nipples. You jump as he begins to pinch them, hurting your sensitive and inexperienced little buds. You whine nervously as you begin to feel pain, getting scared.

Your father leads you back to his cock by gently pulling at your head, pushing between your lips and replacing your whining with the head of his cock. He pulls you down a couple of times, pushing at the entrance of your throat and causing a small gag before letting you resume your awkward bobbing on the tip. He makes no effort to stop Pete as he intensifies his groping.

"Just because you helped, um, giving your sister early medications, doesn't mean you get to be a jerk to her." Your father says, looking back and forth between your bare breasts and his dick tantalizingly sliding in and out between your lips. He seems practically hypnotized.

That explains the weird salty taste of the white sauce that occasionally stripes your meals, as well as your father and brother's excitement at watching you eat recently. The legality of early medication is up in the air, like most medical extraction related things since the virus hit, but your declining grades had your parents **** to help you out in any way they can. Comas are rare before 18, but the symptoms can hit hard.

You swat at Pete's hand as he begins to push it down your waistband and touch your shaved, virgin pussy, while you continue to figure out how to preform a pleasing blowjob. You've had boyfriends, once or twice, but you were trying to take it slow, and the men have a much easier time finding relationships these days; especially with much more **** and slutty girls. You wanted to go ahead and lose it before now, but you never got the chance with anyone you really liked. Then, before you knew it, you ran out of time.

Still, you knew this was coming today as well, carefully shaving for the occasion. You're much less likely to get donations if you start closing down holes, you know firsthand, and there's a high chance you'll lose it one day to a some rude stranger who forgot what consent looks like anyway, even if you try to protect it longer. You were planning on choosing someone nice today, though at this rate, you're likely to lose it to your scummy brother.

You relent to Pete's persistence to at least touch your vagina, parting your legs slightly to allow him easier access as he attempts to part your labia. This might be your first time, but it isn't his, so he quickly finds your clitoris and begins rapidly rubbing it with a quick circular motion. You squeal and moan in surprise around your father's cock at the unfamiliar feeling, still pulsing in your mouth as you lightly suck on it. You've touched yourself once or twice before, but the feeling is different, and your brother at least knows what he's doing enough to get a response, even if it's a bit too dry to really feel good.

"Pete, don't... ah... man... uh... Pete don't... finger... your sister." Your father says awkwardly, a bit because you're sucking on him, but also because he knows this was an eventuality today. Despite his excitement to get you to blow him, he's not quite ready to watch his little girl grow up right in front of him. His cock is ready, but his brain is not.

"Jeez, dad. You want her first time to be going in dry for a quick pump and dump? I thought you wanted me to be nice." Peter says, switching from your clit to pushing the tip of a finger into your dry pussy. You whine nervously again around the cock in your mouth as they begin to decide things for you that you'd much prefer to decide for yourself. Your father sighs heavily in frustration.

"I dunno, there's probably some lube around here, or.... um, spit or something, and we can just uh... use her ass... uh... to donate.... or whatever. Not her... um... puss... va...gina." Your father fumbles out, nervously. Your butt clenches reflexively and you whine at the thought of getting fucked in the ass, though you expected this as well. "I don't think this needs to be so..... sexual."

"Ha ha! Wow, dad," Pete laughs, pushing his finger in a bit deeper into your pussy for a second, then moving it down to poke your clenched anus. "I thought we were doing this to help her out! You want me to unceremoniously fuck my little sister in the ass then jizz in her mouth and leave? Real nice, dad. I know the other guys are gonna do that to her, but..."

"This is a life saving... uh... procedure, Pete! We're not here for your amusement!" Your father says angrily, suddenly grabbing your hair a bit too tight with the hand on the back of your head.

"Your daughter is sucking you off right now, dad." Pete says sharply, roughly pushing his fingertip into your dry, virgin asshole; making you jump. "Get over it."

You open your mouth around the thick cock in it to let out a sharp squeal and quick sobbing noise over the first ever penetration of your butt. Your eyes well up with tears as you grow more and more fearful about what's going to happen to you today. And the rest of your life.

"Good lord, Pete. Don't be so vulgar." Your father says, unable to think of a way to refute him. "Be nicer to your sister, you're scaring her." He looks down at you and realizes he's gripping your hair too tight, so he let's you go and pulls his dick out of your mouth. "Are you okay, sweetheart?"

The heavy strand of spit connecting your trembling lips to his terrifying penis falls down between your bare tits as you stare up at your father, eyes nearly brimming over with tears. You try to compose yourself enough to respond.

"...yeah..." You say sheepishly, then wince sharply as Peter wiggles his finger tip around inside you painfully. "It's.... uh... a little dry."

Your father glares at Pete, who groans in complaint before removing the offending digit and promptly popping it in your mouth, giving you the first taste of your own ass. You wince again, almost wishing you hadn't said anything, as Pete purposefully rubs his finger all over your tongue, even though you try to pull it back to avoid him. He pulls it out after gathering a fair amount of your spit, promptly shoving it back down your pajama pants and up your ass before it can dry out. Your father continues his glare as you let out another squeal at the intrusion.

"Pete, don't be an asshole with your sister's... asshole." Your father says, clearly feeling weird about his last sentence in more ways than one. "This is her first donation. It should be her decision how she gets it."

He looks you in the eye and smiles in a way he means to look comforting, but somehow scares you even more.

"Well, sweetie... You have to donors waiting to give you your medication! How would you like to get it?"