Twilight Sparkle's little incident

You have chosen the Harem Route using the character Twilight Sparkle

One day, Twilight Sparkle is sorting through a group of spell books she laid dormant in her library when she finds one she's never seen before, she has no idea what it does but decides to experiment on herself using it. It gives her a huge cock that whenever a female sees sees it they would want to suck on it or fuck it inside they're greedy hole or holes, anything to breed with the host. She decides to hide it with some clothing but it becomes hard to contain it throughout the day as she walks around Ponyville, trying her best not to get a boner.

Twilight wanders through Ponyville, attempting to conceal her growing bulge as she walks. She spots a group of curious mares nearby, their eyes fixed on her crotch. The spell's effects begin to take hold, their desire inflaming as they approach her eagerly. The urge to breed intensifies with each step they take.

You begin to make a break for it, trying to run as fast as she could with a snake in her pants. Finally you lose them as she goes to the one person you knows that would know what is going on with you and your body, Fluttershy; Fluttershy has no idea about her friend's growing bulge.

You start to look at Fluttershy, your heart racing as you try to explain the situation to her. Fluttershy listens intently, your eyes open wide with shock and curiosity. Finally, you begin to reach out a gentle hand to touch your pants, feeling the outline of the bulge.

Suddenly, you feels a wave of pleasure wash over your body, and you couldn’t help but moan in ecstasy. Fluttershy smiles mischievously, realizing the effect you are having on your friend.

"Oh..wow, that's pretty big...more than what I've seen before." you say, nervously but feeling a hint of horny. In the moment, something inside of your body snaps and lunges at Fluttershy, ripping apart both Fluttershy and hers clothes.

Fluttershy gasps with shock as your start to rip apart her clothes, her body exposed and **** to you and to you alone. You begin to look down at Fluttershy, feeling a rush of desire take over her. you leans down towards her and begin to kiss her passionately, biting and sucking on her lips. Fluttershy moans in pleasure, her body responding to your touch. You and Fluttershy continue to kiss, your bodies pressed against each other with increasing urgency. Finally, you give in to their desires, launching into a wild and passionate sexual encounter.