Empress Poison - Terminal Diaper

The operation didn't go so well... now you are left with a terminal condition, which means you have to wear diapers forever. As you wear the diapers, over time your mind will regress. You will start to think and act like a baby. You will need care and diaper changes. No more adult life, no more relationships, just being a dependant diaper baby, and there is nothing you can go about it.