"There are tentacle monsters in the school! That's why we had the contestants wear Japanese uniforms." The Announcer laughs and the audience joins in.

...

Meanwhile, in the few seconds that it took the Announcer to say that, several weeks have already passed by inside the time bubble. You and Tarken found out about the tentacle monsters just a few minutes after arriving. The monsters gave the two of you a good fucking, then they released both of you and left. Tarken was very angry about it, but the strange thing is that you didn't really mind. All of your previous training has had a large effect on your mind and you've gotten used to being treated like a slave. That realization worries you a little.

This place really is an entire school and there are many girls other than you and Tarken that are being trained here. You've never seen so many slave girls in one place outside of the slave market before. In this school there are countless numbers of every type of slave girl you've ever seen and even a few types you haven't seen before. You and Tarken are taking completely different courses in this slave girl school so you don't see her very often. Not that you really care, you're too busy with your own training and coursework to wonder what she is doing.

Most of the courses that you picked are straightforward, but the "Handmaiden, Dancer, Beast Slave Combination Training" and the "Cow, Pony, Pig Hybrid Slave Training" courses are just as strange as their names suggested. On your first day, your trainer had you put on a skin suit and forbid you from removing it. All your previous training in obedience made you obey that order without hesitation.

Putting on the suit didn't change your weight at all, you're still just as obese as you were before. The suit made you into a weird hybrid of pony, cow, and pig girl slave. You gained the bald head, upturned nose, and floppy ears of a pig girl, and then the strong legs and tail of a pony girl. After that you grew an udder and your torso and arms changed into those of a cow girl. You have three hoof-like fingers on each hand that thankfully still allow you to pick things up. Your breasts and your udder have to be frequently milked of course.

Your strange looking body made adjusting to life in the slave girl school difficult at first. Most of the normal slave girls were horrified and disgusted by your appearance and wouldn't give you the time of day. The beast type slave girls on the other hand were very accepting, especially the few other pony/cow/pig girl hybrid slaves. At night, you lived in a dormitory with other beast slave girls. They befriended you and started giving you advice about being a hybrid slave. The advice was mostly about the best ways to please a Master or Mistress.

As the weeks went by, the tentacle monsters proved to be an almost constant annoyance. They never entered the classrooms, as if they knew that they shouldn't interrupt a class, but they patrolled the hallways like some kind of perverted hall monitors. Oddly enough, the tentacle monsters were only interested in you and Tarken. They completely ignored the other slave girl students. You could frequently hear them lurking outside a classroom, waiting for you to come out. You still didn't really mind if they screwed you or not, in fact you've started to find it very pleasant, but if you get caught by too many of them you'll end up being late for class. After each class ended, you were forced to desperately run to your next class which was very difficult to do because of your extreme obesity. Needless to say, you end up being caught and screwed by at least one tentacle monster between each of your class periods every day. You soon lose count of the number of times you're screwed by one.

Despite all the exercise you get from running, you're unable to lose a single pound of the fat you gained.

...

After an entire year of training, you finally finish all your classes.