It must FEED. (Tentacle on Futa, sounding)

While I wrote a story for the post a pic thread, I figured I would write an independent story. It is a bit short, but I hope everyone likes it.

Time passes mindlessly. The dim light shining in the pit rolls across the blank walls as endless as the boredom of being imprisoned in such a horrid place. The dullness is interrupted four times a day. Once for meals, which are surprisingly generous. The fourth time is when "it" comes to take what it wants from her. Lena, the unfortunate resident of this mind-numbingly bland cell, reflects upon the situation that placed her in this predicament.

Several years ago, Lena started working for the Mage's Guild, specializing in alchemy. While aspiring to do greater things, she became trapped in the sordid affair of producing aphrodisiacs and other perverse brews for the decadent and effete nobility. While making an impressive profit from her work, she aspired for more. Over the past few years, Lena saved her money up and planned to leave the realm to seek better opportunities to challenge herself and achieve fame. To this end, she recruited an apprentice to replace her. This apprentice was a young, ambitious alchemist named Rosa.

While unknown to Lena at the time, Rosa's ambition was twofold. The first ambition was the money the potion maker received from the depraved gentry and the second was old-fashioned revenge. Rosa was an attractive young woman that grabbed the unwanted attention of some of the nobles. Rosa, uninterested in their perversions, coldly turned the young rakes down. Angry at the rebuff the nobles devised a cruel prank for her. Rosa was doped with a unique concoction that turned her into a futanari. Consumed with the libido all futanari endure, she was easy fodder for the horny nobles. After being subjected to extreme debauchery and humiliation at the hands of the nobles, she was summarily discarded once bored with her. With any prospect of a normal life ruined by the potion, Rosa sought revenge. Taking up magic in search of a cure, she became something of a prodigy in the Guild. Always keeping her condition secret, she labored hard for fixing herself.

To date, she has failed and it has made her secretly bitter. Once she learned who made the potion that changed her, only revenge remained. The day she poisoned Lena with a similar potion that changed her was a dark triumph. Unlike the original potion, Rosa's potion was a shemale variant potion, replacing Lena's vagina with testicles to match her new futa-cock. Doubling up a sleeping potion in the mix ensured Lena would suffer in a manner similar to Rosa; depredations at the hand of jaded nobles. After drugging Lena, Rosa sold her to Count Verrin for 10,000 Guilder. Verrin specialized in two forbidden pleasures; futanari and xenomorphs.

Verrin's fetish with xenomorphs placed him in high dem