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