"Hm... Actually, better not let you see what I'm up to." Alex grabbed Tony's briefs from the floor, and put them over his head, acting as a sweaty, musky, blindfold.
About one, desperate, horny, hour later, Tony felt himself turn back to flesh. Before even removing his briefs from his face, he reached down to try and relieve himself, but couldn't feel his dick. He removed his briefs from his face, and looked down to find his crotch just as smooth and featureless as he left it. He went to the computer, and turned the monitor back on which Alex had turned off at some point, but instead of the Chronoviac window, he saw a notepad window.
"Hi bro.
I've removed Chronoviac from your computer.
It's on mine, and is now protected so that only I can use it. I've also made it so that only that Chronoviac can change you.
If you ever want to piss or cum again, close this file without saving, and come into my room without covering yourself, then get on my bed on all fours. I trust what happened earlier will make it quite clear what to expect next :)
Love, Alex."
Tony stared at the message, quivering in desperation to cum, and to piss, gobsmacked at what his brother expected of him.