zinklog
If you want fan translated chapters - Mangadex
for official translations - Mangasee
for both - Comick
if you want to download them you can either use tools like tachiyomi, hakuneko or fdm2 that allows you to ddl from most major sites or use nyaa if you are comfortable with torrenting.
It’s an interesting thing to ponder and my opinion is that like many other things in life something being ‘OC’ is a spectrum rather than a binary thing.
If I apply a B&W filter on an image is that OC? Obviously not
But what if I make an artwork that’s formed by hundreds of smaller artworks, like this example? This definitely deserves the OC tag
AI art is also somewhere in that spectrum and even then it changes depending on how AI was used to make the art. Each person has a different line on the spectrum where things transition from non OC to OC, so the answer to this would be different for everyone.
Instance admins can setup a slur filter for their instance, which automatically removes that word from ever appearing on that particular instance.
If you want some method of making all filenames have same format, use advanced renamer
If you want something to automatically fetch metadata, use calibre or YAClibrary.