Someone else !

"John! To the board, your countdown starts now. 30, 29, ..."

You watch John, taken by surprise, quickly rise to his feet and rush to the board, only to crumble before the pressure and not be able to answer the equation.

"Pathetic, we clearly did that last week." she says erasing the blackboard without giving the answer. "I can't accept to have students slacking off in my class so, to make sure that you study and your results improve, I will have to keep your key for a month. On the first day of next month, you will come back to the board to solve another exercice and try to win your key back. Now go back to your seat." she tells him as she slaps his butt with her ruler.

At the end of the day, when passing in front of the secretariat, you see Ms Ren collecting his key there and putting it on a collar around her neck.

As the days pass, the constant arousal caused by all the indecent posters put up around campus, as well as the revealing outfits of the futas, all starts to wear on you. Your cock is always prevented from going hard during those long school hours. Thankfully you still own your key at night so you are able to get some releaf but this doesn’t prevent you from making wet dreams about the posters you see around campus. You can’t imagine how it must be like for John who doesn’t get any releaf.

A month goes by and, as a new rule has been put in place extending the right to take keys as a punishment to any school staff, every one of them from teacher to janitor or cook had used this right and taken a key.

The first day of the month has finally arrived and John, alongside the other males whose keys have been taken, has the opportunity to win it back.

Ms Ren calls him to the board and... he fails. Or so Ms Ren tells everyone, you couldn’t solve the equation she put on the board either so you are very happy to not have been the one called upon one month ago.

But the next day, a new message gets broadcasted over the tannoy by the principal.