Green short stack shrinks you 

She was a rich woman and wasn't afraid to show it off. She got rich in back-end deals stocks and all kinds of dark deals. She saw you in an alley and thought you were cute and wants to buy you for the night.

A suspiciously wealthy furry

In an accident, you were creating a machine to go through time and space but a miscalculation made it explode because of this you were thrown into another dimension in a smaller size. Be it in the past the future or you are stuck in a tiny size with giants (human, monster girl, or furry) you are unkillable but this might be more of a curse than a blessing. Survive or have someone help you as your colleagues race to save you.

Shrinking through time and space

Giantess and Giants have been domesticated and integrated into society since the dark ages. You're looking to get a giant (monster girl, furry, or whatever) giants sizes can span from 15 feet tall to 100 at the tallest. You're expected to give your giant the best life they could imagine in return they'll listen to anything you ask of them.

Get a pet giant or giantess

The first shrink ray has been made but in a freak accident, it was broken and sent a wave of energy around the globe meaning people shrink randomly. You are one of these people be it alone or with others, you were shrunk to only a few inches maybe centimeters. Survive giant people, animals, or objects as researchers find a way to reverse this.