Ty realized he wasn't really sure who should carry the virus, but he knew he wanted to see the impact. He decided the simple solution to this was just to randomize it- it would go to one person somewhere in the world, and that person would make the virus spread like wildfire. But just to make it a bit more fun, Ty included two small caveats.
The first one was that he wanted to see the change happen. He wished a window into the first carrier's life would appear before him, so he could watch their body transform- and maybe head through the portal and get transformed by the virus himself if he thought that seemed appealing.
The second was that the person his wish infected with the virus would be someone who had questioned their gender for a while- that way, they would be much more likely to enjoy and engage with it.
Ty's horniness mounted as he decided this, and his wishes were granted. Before him a window opened allowing him to see patient zero as the virus first formed in their body, just before they started to transform irrevocably, and he saw...