The Compulsion

You are Anon, 18, starting your senior year of high school

At 16, you had an incident with a mind flayer that left you with a permanent mental conditioning

You can't help but do as you're told, even a slightly commanding tone gives you a distinctive chill down your spine and you're compelled to obey

You're trying to live a normal life but it isn't easy going to mixed school (human and monster)

Still, your grades are killer since you can't help but do your work on time

Usually the conditioning isn't a problem because it's what's expected of you but there's this one girl

Cassandra is her name, a manticore who by some awful cosmic coincidence has 4 classes in common with you

She took an interest in you toward the beginning of that year and after basically the first homework assignment you were doing her homework for her

It's beyond degrading, the way she collects it the day it's due with a smirk and says "Same time next week, dork." Even that is enough to invoke that dreaded chill and send you home with the urge to get it done weighing on your damaged mind

One day about two months into the school year you're handing her her homework, completed in your best imitation of her hand writing after the teacher starting asking her uncomfortable questions

She takes it and gives you her usual line before adding "Also, you're picking me up tomorrow and we're going out. 6 o'clock, and try not to dress like a little dork for once." She hands you her address on a scrap of paper and all you can do is nod.

Filled with dread the rest of the night and all the next day, can't do anything but pick through your clothes as soon as you get home trying to find an outfit that scratches the uncontrollable itch in your mind

Eventually settle and end up driving over to her place half an hour early out of a nagging fear of being late

You sit alone in the dark of your car for about ten minutes before you see her lawn flooded with light as she comes out her front door to investigate

When she realizes it's you, 20 minutes early, she smirks even harder than she does in school and joins you in the car with a mocking "Gee, I didn't think you'd be so excited you'd get here, like, half an hour early."

All you can do is sit silently, staring straight ahead. She seems a little weirded out but does her best to shrug it off before ordering you to drive her to the arcade

She tries tease you with her tail the whole way there but seems slightly upset that you're not really reacting

She seems to forget her worries when you arrive, and of course she makes you pay for everything

At least she has the decency to play co op games with you, and the two of you actually make a pretty good team. She proudly marks the number 3 spot on the scoreboard with "C&A," for Cass and Anon

Eventually you're down to your last $8 and she makes you pick up a couple of root beer floats, you take them outside into the cool night air.

She watches you slowly drink yours before wrapping an arm around and pulling you closer to her. She smiles at you and says "This was nice." You nod in agreement, not entirely from the chill up your spine.

You drive her home and tell her good night, it might be the only time you spoke the whole night

She starts hanging around you more at school, which is surprisingly pleasant given that she wards off anyone else that might unknowingly abuse your condition

You start going on dates a lot more regularly, as much as your funding can allow, and by the time winter break rolls around you're no longer dreading seeing her anymore

You've even started talking a lot more, and she always seems to listen with rapt attention

She seems to notice that you're opening up a little and invites you over to her house during the break

"Invites" meaning "orders you" of course, but in her defence it was pretty polite

It's snowing when you drive over, and the lack of a functioning heater in your car sends you shivering to her front door

She instantly lets you in, like she was waiting at the door for you to arrive

She gestures for you to take a seat on the couch; you comply and are rewarded with a mug of hot chocolate

She joins you with her own mug and you sit quietly sipping while she explains between long sips that her parents are out for a couple days

You're a little nervous about the implications, especially with how close she's sitting, until you reach the bottom of your mug and realize that you've lost track of Ms Tailpussy

She helpfully reveals herself with a sudden painful prick your thigh and a pit forms in your stomach

You don't think you're ready for this

You feel the burning feeling spread through your body like fire, leaving you panting sightly and so aroused you're dizzy as Cass starts to straddle you

"I've been looking forward to this a long time, Anon."

She pulls your pants down and grabs your fully erect and hyper-sensitive rod with a paw, making you gasp and squirm in her grip

She gives you that familiar smirk but this time it feels like there something more, almost like she's relieved

In an instant she's got your dick pressed against the entrance of her tail before slowly sliding it in with a sound and feeling that makes you spasm

She watches you gasp and stifle moans with a look of content before leaning forward and wrapping you in an embrace to whisper in your ear

"Show me how much you want me, Anon."

With a shudder you begin feverishly thrusting up into her, and she melts into the embrace as you kiss her deeply, your hesitation bypassed

You don't last very long but it seems she came prepared, quick to give you another injection of her venom and order you to keep going, no matter how exhausted and overstimulated you feel

The next hour or so becomes a blur of lusty sex, you even vaguely remember making out with her tail pussy before cumming in it a few more times (at her demand, of course)

Finally you're just laying underneath her, feeling her warm body laying against you slick with sweat while you both recover

You work up the strength to mumble a request to go to the bathroom, and she responds by nuzzling into your neck a little and saying "Knock yourself out."

A chill runs up your spine as she rolls off you, only for you to reach over to your empty mug and smash it into your head

Your vision swims as you reach for the saucer it was on, only for Cass to grab you

You've never seen her so mad in your life

"What the fuck, Anon? Did you think that would be funny?"

You shake your head, still uncontrollably reaching for the saucer until she yells at you to cut it out.

You sink into the couch and feel like you're going to cry when she gets off you with a huff and stomps off

She comes back a few seconds later with some alcohol and cotton balls and starts disinfecting your head wound while you try to work up the nerve to explain

Finally you can't take the look she's giving you anymore and you break down and spill the details of your condition

Her expression shifts from one of anger to confusion, then to a contemplative look as she seems to go through the interactions you've had before it all finally dawns on her and you see just a second of guilt before it changes to the worst of all, heartbreak

She slumps into the couch next to you, forcing you to quickly catch the alcohol soaked cotton ball on your forehead before it lands in your lap

"So... none of it was real, then? You're only with me because you don't have a choice?"

It's your turn to feel guilt. She's technically correct, at least that you didn't have a choice, but now that you're confronted with it you realize that your feelings for her went beyond your compulsion

Your swallow and explain softly to her that you hated doing her homework for her and you dreaded your first visit to the arcade, and she deflates even more before you have a chance to say "But..."

"But recently I've been looking forward to seeing you. Like, uhm, really looking forward to it. Hoping you'd ask to go out every weekend even."

Her eyes are on you, skeptical and slightly watery, making it all the more difficult to continue.

"I didn't really realize it until today, but, uhm, I think I really like you, Cass. Like you like you." You pause, trying to think of some way to continue.

"I didn't used to feel safe at school. I felt like it was only a matter of time before someone found out or made me do something really humiliating. Like, I'm honestly so lucky that a hellhound never told me to kiss her ass or something."

Cass smiles a little at that, and you hurry to keep going.

"But when you started hanging around me, well, I felt safe. I guess I knew that you wouldn't let anyone mess with me, and you wouldn't make me do something I wasn't comfortable with. Not on purpose at least."

You see her expression go back to guilt and you scramble to continue.

"What I mean is that I've never had anyone like you and I don't want this to go away. I want you to be with me. I mean, like, together."

She eyes you silently for a while, while you sit and pray you didn't overdo it.

Finally she breaks the silence.

"At first... I thought you were just a little wimp. It was kinda cute, how you'd just nod when I told you to do something. Then, I thought that, well... Maybe you liked me and you were just shy. That was even cuter. I realized how nice it could be to take it slow so that we're both comfortable.  I guess, what I'm trying to ask you is... Do you mind still doing my homework?"

She smiles at you uncertainly for second before you understand her and blurt out a startlingly loud laugh. She caught you so off guard that you fail to contain it, laughing harder than you can ever remember. She joins in halfway but cuts it short by pulling you in for a kiss.

She pulls away and smiles at you in a way that makes your heart flutter.

"So we're together, then?"

"Yeah." You reply. "Together."