I get up, get dressed and run out as shame overwhelms me

The stickiness on my back cools becoming starkly uncomfortable and the feeling of shame takes hold of me. I hop off Mr Hollinhoes desk and quickly pull on my shirt, trousers and shoes while stuffing my crop top, sopping pants and socks in my school bag before rushing out of the classroom. I don't even stop to check if Mr Hollinhoe is coming back, I just bolt for the front entrance and burst into the warm summer sunlight. Fortunately no one is about to witness the mess that I am with my long hair sticking to Mr Hollinhoes sperm that is leaking through the back of my shirt or the massive wet patch on the crotch and down the legs of my trousers that must look like I've wet myself after drinking a gallon of water.

I walk the side streets and little alleyways that run between peoples back gardens all the way home and manage not to come close enough to anyone for them to notice the mess I am.

I finally reach my adoptive home where I live with my adoptive family. It's a large detached house on a big plot of land set back from the street up a long gravelled driveway.

Even now it still feels odd walking up to this house, almost as if I'm trespassing and will be run off as soon as I'm noticed. It never happens and I always look forward to seeing my adoptive big sister.

The front door is unlocked so I know someone is home and I really don't want to have to explain my soiled appearance, so I quickly take off my shoes and move as quickly and quietly as I can. Sneaking through the hallway barefoot, I climb the stairs and head to the bathroom where I'll be able to clean my clothes in the shower with me. It's a flawed plan but I am too focused on cleaning myself of all traces of how Mr Hollinhoe made me feel.

It's quiet as I push open the bathroom door and I jump in surprise when I see my adopted big sister, Kelly standing their wrapped in only a towel. She's so beautiful with her delicate yet hawkish face, large dark predatory eyes, slim nose and porcelain pale skin framed by her jet black heavy fringed hair that falls only to her chin.

"Hi there Lil Bunny, how was your last day at- What the hell? Did Simon Sissons-" Kelly asks, her warm demeanor turning red hot as she sees the mess I am.

"No, no, it wasn't him or anything like that." I tell her quickly knowing that she won't hesitate in going after Simon or anyone else who may have hurt or humiliated me.

Not only did she rescue me from my negligent and abusive druggy parents shortly before they died from an overdose and protected me from a lot of bullying when we were at school together or comforted me when she couldn't save me from it, she also sent me to see a specialist doctor who diagnosed me with a rare genetic resulting from developing inside my druggy mothers womb and convinced her parents to pay for an expensive experimentaltherapy for me.

Because of everything she has done for me I love her dearly and honestly am more than a little infatuated by her. I've never been able, nor wanted to lie to Kelly which was why I was hoping to get cleaned up before she or anyone who might mention it to her saw me.

"I-I had my first... sexual experience." I tell, her blushing furiously but am relieved to see the initial anger fade from her dark eyes.

"Really!?! Oh my beautiful Lil Bunny. You gotta tell me all about it while we get you cleaned up." She laughs delightfully, her dark eyes sparkling brightly before she walks over to the bath tub.

Despite regularly seeing her naked I can't help but stare as Kelly bends over the tub and turns the taps, her white towel riding up and exposing her bare taut pert bum and smooth vagina between her slender pale thighs.

My thoughts however are consumed by what I'm going to tell her. If I tell her everything or even anything truthful it's as good as admitting that I'm gay, which I most definitely am not.

"Sooooo, what happened then?" Kelly asks coming back over and unbuttoning my shirt. "I see you aren't wearing your form fitting underwear."

I've said too much to not tell her, but my mind scrambles to try and find a way of not making it sound gay, or at least not as gay, but I cannot come up with anything.

"Okay, but you have to promise not to tell anyone." I tell her as she pulls my shirt off and holds it up.

"Is this sperm? On your back? How?" Kelly asks bewildered turning the shirt back to front and looking at the wet splotch stains on the fabric with fascination.

"I need you to promise Kelly, please." I plead snatching the shirt back, crumpling it up and throwing it in the washing basket.

"Okay, okay, I promise." Kelly says placating me as she unfastens and unzips my trousers before pulling them down and revealing my tiny penis nestled in my matted pubes. "Whoa, you made quite a mess down here."

Stepping out of my trousers I stand completely naked in front of Kelly and although I'm a mess I'm not embarrassed as I'm naked as regularly around her as she is me and she is the only person, aside from our parents, who is familiar with my girlish body.

Kelly slips out of her towel, letting it fall to the floor and despite being comfortable being naked around each other, I can't help but admire her bare body.

Her body is so slender with a narrow waist, flat belly, a small but round pert bum and slender limbs all covered in taut flawless pale skin the colour of milk. The same skin is stretched even tauter over her most prominent features that are her pert, yet massively out of proportion breasts, so taut that it is almost translucent and the web of delicate blue veins beneath are visible. Each breast is capped by large brown areolas and thick nipples.

Big Sis

Taking my hand and guiding me to the tub I marvel at how her large breasts seem to defy gravity. We get into the bath together and Kelly turns the taps off as we sink into the hot water facing each other.

"Well it started because I stayed behind after school to avoid Simon and his mates. After everyone was gone Mr Hollinhoe was telling me about predators and prey when he grabbed me and pulled onto his lap." I tell Kelly reluctantly and at first her eyes widen in surprise, but then a knowing smile appears on her lips as I recount exactly what happened.

All the while Kelly washes me with soapy hands and telling her about me and Mr Hollinhoe becomes easier, so much so that I tell her how he made me feel. Her touch feels amazing as she washes me, but doesn't feel the same as when Mr Hollinhoe was touching me. Her hands relieve the tension in my body, whereas Mr Hollinhoes seemed to fill me with a hungry yearning.

I do find myself getting excited the more I tell her and my tiny penis stiffens when her fingers start raking through my matted pubic hair under the water. It gets even more intense when I recount Mr Hollinhoe bending me over her desk and Kelly has me get on all fours facing away from her before rubbing her soapy hands between my legs and bum cheeks. I quiver and shake feeling horny and exposed basically moaning the events until finally she stops and has me sit back down in the water facing her.

"But I'm not gay. I can't be. I don't want to be." I finish panting as Kelly sits back with a big grin on her face. "What?"

"Of course you're not gay Lil Bunny. The feelings you described feeling were the same that I felt when I make out with guys." Kelly tells me slowly soaping up her large breasts. "And me rubbing my tits seductively would drive any man insane, but you barely even notice."

"It sounds like you're trying to tell me I'm gay without actually saying it." I tell her finally noticing her rubbing her breasts.

"Then there's your body that you keep trying to deny, your pert little titties, your plump little ass and your teeny weeny little willy that looks more like a large clit than a tiny cock." Kelly carries on leaning forward, putting her hands on my shoulders and looking me in the eyes. "You're a girl just like me only slighty different, it's only natural that you're attracted to men like I am. You're not gay, you're my straight little sister."

"What? I can't be." I start, protesting even though everything she's said seems to make sense. "What will people say?"

"What people? And who cares? You've finished school. Think about it, it makes sense. It is probably a result of your genetic disorder or maybe even your therapy." Kelly explains pulling me into a tight comforting embrace. "We'll go see Dr Maisemore tomorrow, but even if that is the case think how good it could be, how much fun we could have together as sisters."

"I guess. Everything you've said makes sense, but isn't it weird and sad for a boy to become a girl?" I ask returning her hug.

"It just feels that way because it's new and unexpected. Give it a try and see how it feels. You don't have to be scared, I'll be with you every step of the way." She tells me as we sit in the hot water hugging, her large breasts pressed against my small ones.

"Oh-okay, but we can still go and see the doctor tomorrow?" I ask giving in to her reasoning.

"Great! I promise you won't regret it little sister." Kelly says excitedly squeezing me tightly. "We can start right away."