/jp/ - Otaku Culture

I saved all my cute anime girl images in one folder. This was alright until I realized I amassed over one thousand of them. Now I am trying to organize them by series then by character. I have currently written a simple notebook document with Python code that will help me manually sort these images. I tell it where all my images are, then it displays one image at a time, then I tell it which subdirectory to move that image to. While it works it will still take a while to sort through thousands of images, and I am manually typing each subdirectory by hand.

Are there other programs out there that can help with this task? I know I'm not the only person who saves images I find nice.