We check this website, now unixmanga.net is up and dont blocked for our system and other users of the Internet.
So, answer to question: Is unixmanga Down Right Now? - NO! unixmanga is up!
If you have problem with access to site unixmanga, and domain unixmanga.net is not avalible.
Clear browser cache and/or try other web browser
(Chrome, Firefox or Safari).