A Shift in Perception - A Novella by ValerieEmilia K. Grace

Nimble's life isn't complicated. He plays games with his childhood friend and the trans lesbians they met a few years ago, he talks with his mom, and he absolutely never thinks about the black hole weighing him down. But one day, he gets hit with a wave of magic, turning him into the coolest thing ever: a giant doggirl. Sure, it has an on-off switch, but how long can he go without turning it back on? A day? A week? An hour? Probably an hour.