Shrinking App (Patreon)

You picked up your girlfriend's (Phoenix) phone and noticed a strange icon called the "shrinking app" and out of sheer curiosity you decided to start pressing buttons. Within an instant, you realized just how real the app was.

Reduced down to a minuscule size you look up at the, now massive, room around you right as a giantess-sized Phoenix enters the room.

Down by her feet, you pray she finds you but she seems too distracted messing around with her new shrinking app that is, unaware to her, causing you to shrink even smaller!