AFAIK it isn't avaliable captioned nor subtitled and I'm hearing impaired.
Is there any obscure release with English cc/subs or fansubs that I can download? If the subs files, where can I download the compatible videos?
I'm not deaf, so subs with sound effects and stuff aren't nescessary.
I don't have any useful advice for you, but wanted to wish you well in your search. Having said that, I'll check my own recently purchased complete set for subs. I bought it in Australia, and most stuff released here has the subs option. Will drop back in later this week to let you know.
You can try to print out some Transscripts and read them until watch the show. I have tried so and it has work. Here a link to an site with complete transscripts to every single episode: http://www.filkingfairy.150m.com/catacomb.html
If you can rip the DVD to your computer you can then download .srt files. You'll need something other than quicktime to use them. I personally like VLC. It's free and so are the .srt files. Google the title of the episode and .srt and you should find them easily enough. If not, I can try to help.