Feline Lower Urinary Tract Disease - he'll be okay as long as he doesnt stop peeing. it can get life-threatening quickly if it does, so to be safe I need to keep an eye on him
I have a friend whose male cat went thru this just recently. It went bad very quickly, but she caught it in time and the cat is recovering nicely. Whew! I wish your kitty well!
You can make MFF instead; all the fashionable avians will be there! ^v^