This appears to be a filename or a title that includes a date (16.09.21, which translates to September 16, 2021), names or possibly a movie/series title ( Rain , DeGrey ), and an action or description ( Taking Down ). Without more context, it's challenging to provide a specific answer or interpretation.
Paintoy.16.09.21.Rain.DeGrey.Taking.Down.Rain.X... Paintoy.16.09.21.Rain.DeGrey.Taking.Down.Rain.X...