Transformed Into A Piranha Plant

A transformation story for TF Tuesday!  Yay! C:

The story poll closes tomorrow night! https://www.patreon.com/posts/47185409

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You are walking in the forest with the piranha plant gets you.
It is a lovely day for an evening stroll.  And you are a normal, chubby guy in your late 20s (human, of course) who could use the exercise.  So you set out on a walk in the woods, not expecting much of anything to happen, really.
But halfway through your walk, you see the strange plant.  It’s sticking out of some sort of weird . . . /pipe/ in the woods, and is a tall, green thing with a purple flower bud.  You frown and approach it—and it /turns/ toward you!  You cry out in surprise upon seeing the plant: its body has two huge breasts, and its dotted head has enormous lips that smiles as it watched you.  It has no eyes.
Its hands—you didn’t notice it had hands until now!—reach out, and before you knew it you are being grabbed by the creature!  You struggle in its grip, confused and afraid, and the plant continues to smile at you.
Then, its mouth opened wide.  And before you can react, the plant clamps its lips over you, and tightens its grip on your body
You struggle for a moment longer, trying to get away, trying to get out of this monster’s mouth.  It refuses to let you go, and its tongue licks at your flesh.  You writhe and fight, wanting to escape. . .
. . . But then, you feel your body starting to change.  Your skin prickles in a most unusual way, and you feel something starting to . . . /grow/ on you, beginning at your hands.  If you could see yourself, you would have noticed that you body is turning green.  And your skin is smoothing out. . .
The tingling spreads down your body, going from your hands to your shoulders in a matter of seconds.  It’s like you’re getting smoother, but this smoothness feels unnatural—because, if you could see it, you would be able to see that it’s actually a plant’s stem.
The stem growth continues traveling down your body, and you feel its spread as it goes.  Your clothes rip and tear as it increases in mass until, finally, as the stem takes over your skin, your clothing rips right off.
Then, your head starts to change.  The features of your face—eyes, nose, ears—slowly melt away and flatten against your head, though you can still see just fine.  Then, you feel your head start to swell, growing larger than it was before.  Your lips, which are still there, swell up to a massive size, until they are absolutely huge on you.
That’s when the breasts start to grow in.
You feel something on your chest, like it’s . . . swelling, somehow?  The skin inflates outwards more and more, and that’s when you realize: you’re growing boobs!  They continue to grow until they are an absolutely massive size, at least as big as your new head.
Then, your cock starts to tingle, and you feel it . . . wait, is it shrinking?!  Your penis gets smaller and smaller until it no longer exists at all, and a slit opens up between your legs: a new vagina.  You know this should embarrass you, but it honestly arouses you more than anything. . .
And just like that, the transformation is done.
The plant releases your head, and you turn to her with a smile.  That’s when you noticed how beautiful the plant is . . . how attractive she is. . . You need to show your love to her, /now/.
You gently shove her down into the pipe, then put your face between her legs.  A moment later, you start to lick.
You run your tongue around her vagina, teasing the other plant, then penetrate her, lapping up her insides.  She lets out a surprised noise, and then a moan as you fuck her.
You continue your efforts, kissing her labia with your massive lips, and running your tongue across her clitoris.  Then you go back inside.
The other plant grabs your head as you perform oral, and lets out happy noises, clearly pleased by your efforts.  Then, finally, she comes, spraying ejaculation in your face.
You smile and remove your head from between her legs, looking over the other plant with a smile.  Then you lean forward and suck her breast.  At first, you just put her nipple in her mouth, but thanks to your big lips you can put her entire boob inside your maw—so that’s exactly what you do!
The plant smiles and moans in pleasure as you suck her breast.  Then, she gently removes your mouth from on her, and gestures for you to stand on top of the pipe. You obey, crouching down in front of her—and then, she starts to please you.  Guess it’s your turn.
You cry out, aroused beyond belief as your new vagina is pleasured, and a smile crosses your lips as the other plant licks you.  Her tongue grazes your labia, then hits your clit, and you can’t contain the screams that escape your mouth as you are fucked.
You come pretty quickly, the orgasm sending shutters of joy up your spine as you squirt ejaculation in her face this time.  Then the plant comes up, and licks your new breasts, making joyful noises leave your mouth.  Fuck, this feels good. . .
Finally, the plant releases you, and leans forward to kiss you.  You accept the kiss, and as you do, you know that this is the first day of the rest of your life.
And that’s how you ended up where you are now.  The two of you fuck day and night, enjoying life together in the forest.  It’s far more freeing than the life you had before, and you don’t really miss that, honestly.  You await the next person who will come into the woods, so you can transform them in the same way you were. . .