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