Diaper slave Kasumi. (1/3) (Patreon)

    Kasumi is a girl being trained by the infirmary teacher.  Every day after school, she is trained to be a diaper slave in the infirmary.  She wants to be a diaper slave for a certain reason...

    As you can probably tell from the title, this is the first of three separate stories.  The next one will be a diaper change in bed.