I mean its one type of happy ending (, trap on futa, futa tf)

"Fuck bro since when did you wear makeup?" You look confused as she tries to show your face through a phone camera. Your face seeming to be having pink lipstick and matching eye shadow which you know you didn't wear beforehand but your a sexy bitch with it on so why would you complain.

"Fuck you look like a girl... hell your jeans don't fit your style, sis" she says as you look down... your grey shirt turning into a form of crop top and even having a small chest forming two small sphere outline whilst your jeans seem unaffected, maybe some cum stained the shirt... maybe... "your still fucking hot though" you hear as a compliment as you feel a slap on the ass causing a small pleasure to your hungry ass, sated but still always willing to take more.

"I thought you were straight..." you say with breath gone as you even realise your hairs also grown out a lot and might even have a natural pink fade in the lower portions of the hair. "Maybe but your still a guy right sis... besides I still wanna fuck you bad and isn't what matters" as she moved to begin the makeout and grope routine.

You didn't mind at all but you couldn't help but notice your sister getting even more hot and bothered, her chest had already nearly exploded out her sluttified schooltop and they didn't seem to be changing or growing. As your experimental hands went lower and found the source of your sisters issues.

A 4" dick is where your sisters pussy should be.... as you move under, theres two ping pong sized but you can still feel the transformation ongoing however... her pussy does seem to still be existing and it seems to be as wet as the precum dripping from the tool.

Your mind begins to wander on the potential taste and your sister seems to notice, moving your head right in front of it. Not uttering a word between you two expecting what needed to be done. Your mouth lining and watering as you engulf the still growing tool... as you quickly realise your mouth really enjoys the treat it gained and it definitely sent those sensations round the rest of your body.

Your hands trying to carress the newly grown testicles and the original pussy she had to show you loved every part of her as you feel the dick growing and extending as time passed more and more turning your fitting a dick in your mouth and licking it into a actual blowjob. The length seeming to stop around 7" as you can see your lipstick rings around the base and halfway mark. You could guess that it probably was still unstained on your lips with the way the cum seemed to work... but you wouldn't mind if the cum was smeared over the lipstick.

As your sister grabbed your back of your head unsatisfied with your speed as she pushed you to the base and back with ****. Your gag reflex was definitely long gone before this but its was replaced with some form of oral gspot. Your legs twitching each time as you feel the thick rod pierce your throat, your sister seemed to be similar in pleasure levels twitching and leaking precum, especially with the attempts to make sure her sperm storage and pussy got just as much attention.

"Fuck bro... im close, i wanna do it in your ass..." your ass thatd be your virginity and with your sister nonetheless.... but why would that be an objection you already blew her and are basically corrupted to have little objections... as you lie down in mating press postion and you pull your jeans down.

"Fuck your such a slut sis~" she said seeing the previously panties turned into ones giving less to hide and a heart shaped cut out near the back from all the precum you leaked. As your buttplug didn't change much but in a increase in size.

Your sister pulling it out and seeing the fully lubed from some liquid as you couldn't complain, less time to get that dick in you. As the dick wielding chick agreed as she didn't take time to chew the scenery and plunged right in. Her size going all in as you can't resist locking your legs around her.

The next few minutes lasted like a candle that burnt twice as bright... but it felt twice as good. The slapping balls against your body from going all in along with your asscheeks being assaulted by her hand, it was impossible for you to not cum first, your perverted panties unable to hide it as you feel a small sense of deja vu as cum hits your face, hair and even neck and crop top.

Your sister definitely would have teased you but she was too horny and couldn't say anthing but groans, trying to have her first dickgasm inside you. This didn't require as long only taking a few more cycles of in and out to release her seed inside you, her body slumping ontop with a smile, though her dick didn't seem to die down and left in your anal cavity, you can't complain with the thick warmth in your ass. Especially not with the fuzzy feeling filling your brain and body with the load she released.

You both know the future is uncertain but you do know three things, sex is good, the cum will change you more and your both going for a round 2... or is it 5.... does it matter? Your happy and shes happy... and thats all that really matters right now.