You scrutinize the costume in your hands. It was a black cat fursuit, with no distinguishing features about it besides the fact that it looked perfect for your current height and build. You rub your fingers over the fur of the costume, not resisting or questioning anything that you were doing. In fact, your mind was in a strange trancelike state, blank except for only one thought, that thought being that you had to put on the costume you were holding as soon as possible.
You quickly begin to tear off your clothes, frantically scattering them all over the ground, until you only stand in the nude wearing nothing but your pastel blue collar.
Examining the costume, you note that the fursuit came in two pieces: the headpiece and the bodypiece. The costume's body was also only a one-piece, meaning there were no zippers on it. The only thing you had to do was insert yourself into it.
You place the headpiece on top of the changing room’s seat and grab the fursuit's body with both of your hands. You push your left leg into it first, lowering your foot until it reaches the bottom of the costume. Twirling your left toes in the paw of the costume, you follow with your right leg. After that, you're practically wearing the full costume on your lower half; all you had to do now was pull it to cover your upper half.
You pull the costume upward, never noticing how perfect the fursuit felt on you or how accurate the dimensions of it were, as if it were custom-built for you. Extending it over your torso, you put your tail into the tail socket of the costume before simply placing your arms into the arms of the costume. When your hands enter the forepaws of the fursuit, you continue to tug the costume up until it reaches your neck.
Eventually, you’re wearing the entire body of the costume, the outfit now covering your small and slender form. All that remained was the head. Grabbing the headpiece with your hands, you place it over your head, pushing your cat ears into the costume's own ears, before moving it downward until it reaches the body of the costume.
Aligning the costume pieces together, the fursuit reaches its completed state as you look in the changing room’s mirror. Eeriely, the costume flows together seamlessly, looking almost connected, with no separation between the bodypiece and the headpiece visible. But to be honest, it just looked as if you were wearing a well-made costume of an anthro cat. that was still obviously a fursuit. However, within seconds, that all changes.
You gasp as you feel a strange sensation wash over you, the costume beginning to work its magic as it onsets a new series of changes. You sense yourself settling into the costume, the fursuit beginning to feel more real by the second. This isn't helped by the fact that it actually WAS becoming more real. The faux fur covering the costume quickly transitioning into real strands of black fur as the entire costume becomes more and more lifelike. Eventually, the fursuit doesn’t even feel (or look) as if it’s a costume anymore. It feels like your actual body.
Just within the manner of a minute, you have become one with the costume. And you still had no idea—your mind still blank. However, once the sensations begin to fade so does the trance on your mind. You blink your blue feline eyes as you gain your consciousness back.
“I… uh… what?”
Looking around the changing room, you feel unsettled and confused. “What the hell happened?” you wonder, spotting your clothes thrown all over the floor. The moment your eyes meet the mirror and your new reflection, you have all the answers you need.
An anthro black cat stares back at you.
“No… no…” You shake your head, the feline doing just the same. “Wasn’t it already bad enough before?”
You were no longer human. Instead, you had turned fully into a cat, an anthropomorphic one, but still a cat nonetheless.
You examine your new body closely. Because you were already part cat before, your ears and tail don’t make much of a difference. The dense fur covering your body, on the other hand, is a different story. Nevertheless, you still somewhat looked the same as before, as in your height and build. However, some things had adjusted for your new animal form. For instance, your small cock still resembled your previous human member, but your balls were now covered in black fur.
You also have a muzzle now... and whiskers! You stroke them as you look at your head closely, your new face still containing a feminine and cute look somehow despite now being a cat.
Instead of dread and fear, you begin to feel annoyed, realizing you still looked like a femboy even as an anthropomorphic cat. Maybe even more so in new ways. For example, you note how your soft and perky pink nipples are even more noticeable now against your black fur, or the fact that the blue collar that Uncle Jack made you wear matches your new body rather well.
You let out a long sigh. Goddammit. What have you done?