To view the "help" system in Japanese, you will need to change the J-Net default language to Japanese. To do this, first click on the "My Settings" link on the right hand side of the J-Net front page after logging in:
Click on the "Preferences" tab:
Click on the "Language" drop down and select "Japanese". Click on "Save Changes" when you are done.
Click on "J-Net" in the breadcrumb to go back to the J-Net home page:
System user interface and FAQ/Help are now in Japanese: