Volume section

there should be a feature where you can just select the name of a hentai manga series and you can see the chapters individually or read through it all at once

If you wanna view them as a whole good luck. Now if you just wanna see each volume individualy just search the title or the author.

Some of the mutiple chapter mana have the title as the series, instead of 'original work'. i usually do like Long said and search the artist to see all the chapters.

We actually HAD that feature for a very select few, for a while. Somehow it disappeared...
Not sure why.

Jacob told me once was trying to make it so people with access to edit the info could enter new series (as in, create a whole new series rather than select from a list).

I think it was just getting impossible to keep up with it so he took it down all together until he is going to be able to implement a feature like this. It is different from the other categories since new seires doujinshi are added all the time.