Small, to compliment her cuteness

You hardly have time to process what she said as you clasp the collar on her. No sooner do you do so the changes begin.

"Ahg!? I feh, I fe, I feeeel soooooo strange!" Sarah stutters out. You realize that you never made the transition from free woman to enslaved futa an instantaneous or painless one. You decide to observe for now as you lay Sarah gently down onto her her sofa and continue watching. She is sweating profusely and breathing heavy as the neurons within her brain fire rapidly and rearrange sporadically you notice at first that her expression is blank and her blank glare makes it seems as though the poor woman has gone brain dead. When this lingers for five minutes you begin to worry, but just as you contemplate pulling out the rulebook to see if you fucked up somewhere she moves for the first time since the transformation started. Sarah's head turns toward yours as her gaze takes on a decidedly sultry look. She let's out a soft moan and briefly glances down her body. "Master I'm going to change for you, I hope I please you."

You stare down her body to just above her vagina eager to see phase two take form. Sarah suddenly gasps as she grasps the edges of her sofa.

"Hah! Hah! Argh!" She grunts madly as an intense pressure builds up just about her glistening slit, however her lust filled gaze never shifts from your direction.

Finally it happens it starts as a tiny bump above her vagina that slowly swells and expands outward. At first it is a rather odd looking stalk of flesh that protrudes out of Sarah unnaturally. You soon notice that the tip is starting to darken slightly and plump out until it is very clearly a penis head. Her penis now lay limp and has ceased to grow at a very surprising two inches. This was clearly way smaller than you thought would be the case, but you can't say it doesn't complement her natural modest cuteness.

Unbeknownst to the two of you as the veins were still in the process of forming the nerve ending in her teeny weeny where multiplying five fold making her much more sensitive than any man. Very soon Sarah began gasping and spasming harder. "OH GOD! MASTER! TAKE ME!" You scoop up your newly minted futa **** and take her to the bed room. You place her gently on the bed and remove your clothes hastily. You turn to see Sarah tearing her clothes off as though they caught fire, she wants this and you notice her flaccid two inch dick has now grown a meager half inch as she grows to full erection. Panting furiously she looks at you expectantly. You waste no time in jumping atop what's yours.

You gaze deep into Sarah's needy eyes as you kiss her deeply and passionately. She moans into your kiss and nearly melts into your arms. "Ahg, mmm, ahhh" Sarah gasps and moans as you feel a warm gooey liquid hit your leg.

"Sorry, Master I couldn't contain my excitement, and I'm simply not use to my new equipment yet."

Glancing down at the single tiny string of cum connecting your leg and her penis you begin to suspect something. Sarah turned into a tiny dicked, quickshot, futa cutie. Wanting to test your theory you grip her penis and start stroking.

"W...w...w...w...wait Mastaah, mmm, ah" you barley even run your hand up and down her length ten times before her eyes have rolled into the back of her head as her body is racked with another mind blowing orgasm. You run a hand along her pussy and feel how soaked she is down there as well, confirming that she was orgasming from both genitals. Forming an idea you take position next to her on her bed.

"Climb on top of me with your back to be love" you tell her.

"Yes, right away master" She near salutes as she mounts you from above.

You waste no time as you position your enlarged member to the entrance of her damp pussy. You grasp her around her pert breasts and massage her nipples. It works as intended as soon she begins shaking and moaning in furious orgasm after furious orgasm. You peak around her body to enjoy the show as everything goes according to your plan. As Sarah happily bounces up and down on your cock her own futa dick is bounding wildly as rope upon rope of cum spray over her body, face, bed, and floor. Her pussy grips tightly to your member as she clenches down on you again and again in pleasure. After ten minutes of intense pleasurable sex for your new **** and yourself you finally feel yourself reaching orgasm. You flip her around and hold her tightly in a hug and kiss her passionately as you release a jet of cum into her quivering pussy.

"Ah, oh, ha, master, oh master, I. LOVE. YOU!!!" She quakes in orgasmic bliss and faints as she releases one final wave of cum into you abdomen before rolling off and passing out next of you.

You get up and give her a peck on the forehead. "mmm master I'd do anything for you. I love you soooo much." Sarah mumbles as she pulls the covers up over her head.

You take one last glance at her before you head out of her apartment. "Better stock up on some Gatorade or something or else Sarah'll collapse due to dehydration." You muse as you wander off to the store.