How should be uninstalled "FusionUpdater"?

How should be uninstalled "FusionUpdater"?
Does "FusionUpdater" use the registry?

Just delete it?

I have not understood where it was downloaded though the latest version is downloaded when "Complex-sunrise.exe" is executed.

Did it replace "FusionUpdater.exe" with the latest version?

If it is so, is uninstallation completed only by deleting the directory of "FusionUpdater"?

Yes and yes.

I see, thanks !