Steve, a 19 year old with newly acquired shrinking disorder, is forced to move in with his mother, the lovely 47-year-old Mary, as she tries to help him overcome his new condition.

Chapter 3 adds the start of the true torment I know you were all waiting for, it'll only heat up from here. Check each chapter's description for fetishes included if you care.

With your parents away for the weekend, you - a 16 year old high school boy - are finally finishing assembly of a shrinking machine you bought to fulfill your girlfriend’s fantasies - and finally lose your virginity. The only hitch is you have to babysit your tomboy little sister - 11 year old Becky - but luckily she’s fine with leaving you alone to work on your boring project. Unluckily, both you and your parents have forgotten her birthday is tomorrow, and when she comes back into your office after you run your first shrinking test, she doesn’t realize that you’re shrunk and pauses your regrowth - and worse, begins changing the settings that affect you, muting your voice and worse. When she finally does notice you, thanks to the only context she has for shrinking devices being from a Tiktok video where it’s used on a dog, she assumes that you’re her surprise present for her birthday… Her new pet.

And, being a tomboy, she’s more than happy to finally get to play games with you again.

You’re not going to like those games.

The story focuses on humiliation at the hands of your younger sister, who is just playing fun games and pranks with her new pet. With your ability to protest taken away, it won’t take long for those to spiral to a bad place.

This story is aiming to be like 'Property of Lily' if the giantess was your younger sister with no interest or knowledge of sex, only 'playing' with you for her amusement, half unaware of how much you're actually suffering, half not caring. Becoming her pet was all your idea after all! Focuses mostly on odor content, first feet and foot worship with a heaping of humiliation, eventually there will be ass and fart stuff, and transformation-adjacent stuff too. Tags will be added as they become relevant.